Plus three not mentioned in Copac: Anonymous (1685); one by Otto Eisenschiml (1947 - which seems to be an English Translation of the Schopenhauer German translation of the Spanish Original?); one by Thomas G. Corvan (1964)

Eisenschiml Reference: The Art of Worldly Wisdom, Three Hundred Precepts for Success Based on the Original Work of Baltasar Gracian
Otto Eisenschiml
Published by Essential Books, Duell, Sloan and Pearce - New York
Copyright, 1947 by Otto Eisenschiml

"Life is becoming more complex each day; the future cannot be forseen by the present; the present has not been forseen by the past. Our store of knowledge has increased so much that it is now more difficult to be a well-read person than it was formerly to become a world-renowned savant.
It was with an introduction like this, that Baltasar Gracian, some three hundred years ago, bequeathed his Art of Worldly Wisdom to posterity."

From page 79:
Prices are determined by two factors: intrinsic value and salesmanship. Few buyers know intrinsic values and, therefore, they run with the crowd. The art of selling is to make the crowd run your way.
Praise your goods, but do not overpraise them. Whisper that they are fit only for connoisseurs, and everyone will want to buy them. Also create the impression that they are scarce, for no one desires what is readily obtainable.
In a nudist colony the strep-tease dancer would find herself among the unemployed.

References from COPAC

TI- The art of prudence: : or, a companion for a man of sense. Written
    originally in Spanish by ... Balthazar Gracian; now made English ... 
    and illustrated with the Sieur Amelot de la Houssaie's notes, by Mr. 
    Savage.
AU- Gracián Baltasar
AU- Browne Daniel [bookseller]
AU- Walthoe John [bookseller]
AU- Mears W. [bookseller]
AU- Brown Jonas [bookseller]
ED- The third edition, corrected
PU- London : printed for D. Browne, J. Walthoe, W. Mears, and Jonas Browne,
    1714
PY- 1714
PD- [28],280p. (8vo)
LA- English
HL- Manchester


TI- The art of prudence, or, A companion for a man of sense
AU- Amelot de La Houssaie Abraham-Nicolas
AU- Gracián Baltasar
AU- Savage John [Translator]
ED- The second edition, corrected
PU- London : Printed for Daniel Brown ... [and 3 others], 1705
PY- 1705
PD- [28], 280 p ; 19 cm
LA- English
NT- Apparently a re-issue of the 1702 edition, with a fresh title page
KW- Maxims - Early works to 1800
HL- Edinburgh


TI- The art of prudence: : or, A companion for a man of sense. Written
    originally in Spanish by ... Balthazar Gracian; now made English ... 
    and illustrated with the Sieur Amelot de la Houssaie's notes
AU- Gracián Baltasar
AU- Bowyer Jonah [bookseller]
ED- The second edition, corrected
PU- London : printed for Jonah Bowyer, 1705
PY- 1705
PD- [30], 280p (8vo.)
LA- English
HL- Manchester


TI- The art of prudence, or, a companion for a man of sense
AU- Gracián Baltasar
AU- Savage John
PU- London : Printed for D. Browne... and T. Benskin, 1702
PY- 1702
PD- [28] 280p ; 20cm
LA- English
NT- Translation of his Oraculo manual y arte de prudencia
KW- Maxims
HL- Cambridge


TI- The art of worldly wisdom : a pocket oracle
AU- Gracían Baltasar
PU- London : Mandarin, 1994
PY- 1994
PD- xix, 181p, pbk
LA- English
IS- 0749314826
NT- Originally published in Spanish as "Oráculo manual y arte de prudencia
KW- Self-realisation
KW- Maxims
HL- Oxford ; Trinity College Dublin


TI- The art of worldly wisdom : a pocket oracle
AU- Gracían Baltasar
PU- London : Heinemann, 1993
PY- 1993
PD- xx, 182p ; 20cm
LA- English
IS- 0434303127
NT- Translated from the Spanish
KW- Self-realisation
KW- Maxims
HL- Cambridge ; Manchester ; Oxford ; Trinity College Dublin


TI- The art of worldly wisdom
AU- Gracían Baltasar
SE- Shambhala pocket classics
ED- Unabridged
PU- Boston ; London : Shambhala, 1993
PY- 1993
PD- 281p ; 12cm, pbk
LA- English
IS- 1570620296 (set), 0877739218
NT- Translation of: Or'aculo manual y arte de prudencia
KW- Spanish prose
KW- Maxims
HL- Oxford ; Trinity College Dublin


TI- The art of worldly wisdom : a collection of aphorisms from the work of
    Baltasar Gracian
AU- Gracián Baltasar
AU- Fischer Martin
PU- New York : Barnes & Noble, 1993
PY- 1993
PD- xvii, 188p ; 19cm, cased
LA- English
IS- 1566195306 (pbk), 1566191335
NT- Translation of: Oraculo manual y arte de prudencia
KW- Conduct of life - Quotations, maxims, etc.
KW- Aphorisms and apothegms
HL- British Library


TI- The art of worldly wisdom : a pocket oracle
AU- Gracián Baltasar
PU- London : Heinemann, 1993
PY- 1993
PD- xx, 182p ; 20cm
LA- English
IS- 0434303127
NT- Translated from the Spanish
KW- Self-realisation
HL- British Library


TI- The art of worldly wisdom
AU- Gracián Baltasar
SE- Shambhala pocket classics
ED- Unabridged
PU- Boston ; London : Shambhala, 1993
PY- 1993
PD- 281p ; 12cm, pbk
LA- English
IS- 1570620296 (set), 0877739218
NT- Translation of: Or'aculo manual y arte de prudencia
KW- Spanish prose
KW- Maxims
HL- British Library


TI- The Art of Worldly Wisdom. (Translated from the Spanish by Joseph
    Jacobs.)
AU- Gracian Baltasar
AU- Jacobs Joseph
SE- [Everyman's Library. no. 401.]
ED- [A reissue.], The Oracle, etc.
PU- Dent : London; Dutton: New York, 1962.
PY- 1962
PD- 8o.
LA- Unspecified
HL- British Library


TI- The Art of Worldly Wisdom. (Translated from the Spanish by Joseph
    Jacobs.)
AU- Gracian Baltasar
AU- Jacobs Joseph
PU- New York : Frederick Ungar Publishing Co., [1960.]
PY- 1960
PD- pp. lvi. 197. ; 8o.
LA- Unspecified
HL- British Library


TI- The art of worldly wisdom
AU- Gracián Baltasar
AU- Jacobs Joseph [Translator]
PU- New York : Macmillan, 1950
PY- 1950
PD- lxxiv, 196 p
LA- English
NT- Facsimile. Ann Arbor, Mich. : University Microfilms, 1967. 18 cm
    Translation of: Oraculo manual
KW- Conduct of life
KW- Maxims
HL- Edinburgh ; ULL


TI- The art of worldly wisdom
AU- Gracián Baltasar
PU- 1930
PY- 1930
LA- English
HL- Manchester


TI- The Art of Worldly Wisdom ... Translated from the Spanish [entitled:
    "Oraculo Manual"] by J. Jacobs.
AU- Gracian Baltasar
AU- Jacobs Joseph
PU- London : Macmillan and Co., 1892.
PY- 1892
PD- pp. lxxiv. 197. ; 8o.
LA- Unspecified
NT- Part of the "Golden Treasury Series."
HL- British Library


TI- The compleat gentleman; : or, A description of the several
    qualifications, both natural and acquired, that are necessary to form a
    great man ...
AU- Saldkeld T. [trans.]
AU- Lord P. [bookseller]
AU- Leslie James [dedicatee]
AU- Gracian Baltasar
ED- The third edition
PU- Dublin, : pr. for P. Lord ..., Bookseller,, 1760.
PY- 1760
PD- [14], 166p. (12mo.)
LA- English
NT- This Irish edition is dedicated to James Leslie, Bishop of Limerick
KW- Conduct of life
HL- Trinity College Dublin


TI- The compleat gentleman: or a description of the several qualifications,
    both natural and acquired, that are necessary to form a great man.
AU- Gracián Baltasar
AU- Osborne Thomas [publisher]
AU- Saldkeld T.
ED- The second edition
PU- London : printed for T. Osborne, 1730
PY- 1730
PD- [12], 236 p ; 20 cm (8vo.)
LA- English
HL- Manchester


TI- The courtiers manual oracle : or, The art of prudence
AU- Gracián, Baltasar
PU- London : printed by M. Flesher, for Abel Swalle ..., 1685
PY- 1685
PD- [28], 272, [5] p ; 18cm
LA- English
KW- Courts and courtiers
KW- Maxims
HL- Birmingham


TI- The Courtiers Manual Oracle or, the Art of Prudence ... Now done into
    English.
AU- Gracian Baltasar
PU- London : M. Flesher, for Abel Swalle, 1685.
PY- 1685
PD- pp. 272. ; 8o.
LA- Unspecified
HL- British Library


TI- The oracle : a manual of the art of discretion = Oráculo manual y arte
    de prudencia
AU- Gracián Baltasar
SE- Everyman's library ; no.401
PU- London ; New York : Dent : Dutton, 1962
PY- 1962
PD- ix, 307 p ; 19 cm
LA- English, Multiple languages , Spanish
NT- Bibliographical note : p. 43-46
    Spanish text with parallel English translation
KW- Maxims
HL- Birmingham


TI- The oracle : a manual of the art of discretion = Oráculo manual y arte
    de prudencia
AU- Gracián y Morales Baltasar
AU- Walton L. B.
PU- London : Dent, 1953
PY- 1953
PD- ix, 307 p : port ; 19 cm
DT- Bibliography included
LA- English, Spanish
NT- Bibliographical note: p. 43-46
    Biographical material in introduction
KW- Maxims
HL- Birmingham ; Durham ; Manchester ; Nottingham ; Oxford ; Sheffield ;
    Warwick


TI- The oracle : a manual of the art of discretion.  Oraculo manual y arte
    de prudencia
AU- Walton Leslie Bannister [Editor]
AU- Gracian Baltasar
PU- London, 1953
PY- 1953
LA- Unspecified
NT- Spanish & English
HL- Aberdeen


TI- The oracle : a manual of the art of discretion.  Oraculo manual y arte
    de prudencia
AU- Walton L.B.
AU- Gracian Baltasar
PU- London, 1953
PY- 1953
LA- Unspecified
NT- Spanish & English
HL- Aberdeen


TI- The oracle : a manual of the art of discretion. Oraculo manual y arte de
    prudencia ; the Spanish text and a new English translation
AU- Gracián Baltasar
AU- Walton Leslie Bannister [Editor]
PU- London : Dent, [1953]
PY- 1953
PD- ix, 307 p : port ; 19 cm
LA- Spanish
KW- Maxims
HL- Edinburgh


TI- [Oráculo manual.] A Truthtelling Manual and the Art of Worldly Wisdom
    ... Translated ... from a 1653 Spanish text by Martin Fischer.
AU- Gracian Baltasar
AU- Fischer Martin
PU- Springfield, Ill., Baltimore : Charles C. Thomas, 1934.
PY- 1934
PD- pp. 305. ; 16o.
LA- Unspecified
HL- British Library


TI- [Oráculo manual, etc.] The Courtier's Oracle; or, the Art of Prudence
    ... Done into English.
AU- Amelot De La Houssaye Abraham Nicolas
AU- Gracian Baltasar
AU- Savage John
ED- Third edition, etc.
PU- London : D. Browne, 1714.
PY- 1714
PD- pp. 280. ; 8o.
LA- Unspecified
HL- British Library


TI- [Oráculo manual, etc.] The Courtier's Oracle; or, the Art of Prudence
    ... Done into English.
AU- Amelot De La Houssaye Abraham Nicolas
AU- Gracian Baltasar
AU- Savage John
ED- Second edition.
PU- London, 1705.
PY- 1705
PD- 8o.
LA- Unspecified
HL- British Library


TI- [Oráculo manual, etc.] The Courtier's Oracle; or, the Art of Prudence
    ... Done into English.
AU- Amelot De La Houssaye Abraham Nicolas
AU- Gracian Baltasar
AU- Savage John
ED- [Another edition.], The Art of Prudence; or a Companion for a Man of
    Sense ... Made English ... and illustrated with the Sieur Amelot de la
    Houssaie's notes, by Mr Savage.
PU- London : Daniel Brown, 1702.
PY- 1702
PD- pp. 280. ; 8o.
LA- Unspecified
HL- British Library


TI- [Oráculo manual, etc.] The Courtier's Oracle; or, the Art of Prudence
    ... Done into English.
AU- Amelot De La Houssaye Abraham Nicolas
AU- Gracian Baltasar
AU- Savage John
PU- London, 1694.
PY- 1694
PD- pp. 256. ; 8o.
LA- Unspecified
HL- British Library


TI- [Oráculo manual.] The Oracle ... The Spanish text and a new English
    translation, with critical introduction and notes by L. B. Walton.
AU- Walton Leslie Bannister
AU- Gracian Baltasar
PU- London : J. M. Dent & Sons, 1953.
PY- 1953
PD- pp. ix. 307. ; 8o.
LA- Unspecified
HL- British Library


TI- Practical wisdom for perilous times : selected maxims of Baltasar
    Gracián
AU- Gracían Baltasar
AU- Kaye J. Leonard
PU- London : Aquarian, 1994
PY- 1994
PD- xxvi, 239p ; 18cm (bk)
LA- English
IS- 1855383721
NT- Originally published as: The wisdom of Baltasar Graci'an : New York :
    Pocket Books, 1992
    Translated from the Spanish
KW- Maxims - Early works to 1800
KW- Life - Early works to 1800
KW- Spanish prose
HL- Cambridge ; Oxford ; Trinity College Dublin ; ULL


TI- Practical wisdom for perilous times : selected maxims of Baltasar
    Graci'an
AU- Gracián Baltasar
AU- Kaye J. Leonard
PU- London : Aquarian, 1994
PY- 1994
PD- xxvi, 239p ; 18cm (bk)
LA- English
IS- 1855383721
NT- Originally published as: The wisdom of Baltasar Graci'an : New York :
    Pocket Books, 1992
    Translated from the Spanish
KW- Spanish prose
HL- British Library


TI- The science of success and the art of prudence. Translated by Lawrence
    C. Lockley.
AU- Lockley Lawrence Campbell
AU- Gracian Baltasar
PU- University of Santa Clara Press : San Jose, Cal., [1967].
PY- 1967
PD- pp. iii, 93; port ; 23 cm.
LA- Unspecified
HL- British Library


TI- A truthtelling manual and the art of worldly wisdom : being a collection
    of the aphorisms which appear in the works of Baltasar Gracián
AU- Gracián Baltasar
AU- Fischer Martin [Translator]
ED- 2nd and rev. version
PU- Springfield, Ill. : C.C. Thomas, [1945]
PY- 1945
PD- 5 p. ., 3-311 p., 1 . incl. 2 mounted facsim. (incl. front.)  ; 15 cm
LA- English
NT- Cover-title: Gracián's manual
    With facsimile of t.-p. of the Madrid, 1653, edition: Oracvlo manval, y
    arte de prvdencia, sacada de los aforismos que se discurren en las obras
    de Lorenco Gracian
KW- Maxims
HL- Edinburgh