“A book that reveals the mind is worth more than one that only reveals its subject.”
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Joseph Joubert 253
French moralist and essayist 1754–1824Related quotes

Matsuo Bashō, Collected Haiku Theory, eds. T. Komiya & S. Yokozawa, Iwanami, 1951 (Unknown translator)
Statements

Auf eine ähnliche Weise sollen in der vollkommnen Litteratur alle Bücher nur Ein Buch seyn, und in einem solchen ewig werdenden Buche wird das Evangelium der Menschheit und der Bildung offenbart werden.
“Ideas,” Lucinde and the Fragments, P. Firchow, trans. (1991), § 95

“All writers have concealed more than they revealed.”
The Diary of Anaïs Nin, Vol. 5
Diary entries (1914 - 1974)
Context: One handles truths like dynamite. Literature is one vast hypocrisy, a giant deception, treachery. All writers have concealed more than they revealed.

“It is more sinful to conceal the power of the atom than it is to reveal it.”
Statement, 9 March 1954. Quoted in Peter G Boyle's The Churchill-Eisenhower Correspondence 1953-55
The Calcutta Quran Petition (1986)

“The winning of honor, is but the revealing of a man's virtue and worth, without disadvantage.”
Of Honor and Reputation
Essays (1625)