An aphorism can never be the whole truth; it is either a half-truth or a truth-and-a-half.
(Karl Kraus (1874-1936), Austrian satirist. repr. In Thomas Szasz, Anti-Freud: Karl Kraus's Criticism of Psychoanalysis and Psychiatry, ch. 8 (1976). Die Fackel, no. 270/71 (Vienna, January 19, 1909).)
What use soever be made of truth, yet truth is truth, and now the question is not, what is fit to be preached, but what is true.
(Thomas Hobbes (1579-1688), British philosopher. English Works, "Of Liberty and Necessity," p. 252, ed. Molesworth (1839-1845).
Concerning the pernicious use that may be used of the doctrine of predestination.)
Belief in the truth commences with the doubting of all those "truths" we once believed.
(Friedrich Nietzsche (1844-1900), German philosopher, classical scholar, critic of culture. Friedrich Nietzsche, Sämtliche Werke: Kritische Studienausgabe, vol. 2, p. 387, eds. Giorgio Colli and Mazzino Montinari, Berlin, de Gruyter (1980). Mixed Opinions and Maxims, aphorism 20, "Truth Will Have No Other Gods Alongside It," (1879).)