Philosophy would render us entirely Pyrrhonian, were not nature too strong for it.
(David Hume (1711-1776), Scottish philosopher. repr. with an intro. by J. M. Keynes and P. Sraffa, Cambridge Univ. Press, Cambridge (1938). An Abstract of A Treatise of Human Nature, p. 24 (1740).
A review Hume wrote of his own book in 1740.)
The psychical, whatever its nature may be, is itself unconscious.
(Sigmund Freud (1856-1939), Austrian psychiatrist. The Complete Psychological Works of Sigmund Freud, volume XIV, tr. And ed. James Strachey, "Some Elementary Lessons," p.283, The Hogarth Press (1966-74).)
The degree and nature of a man's sexuality extends to the uppermost pinnacle of his spirit.
(Friedrich Nietzsche (1844-1900), German philosopher, classical scholar, critic of culture. Friedrich Nietzsche, Sämtliche Werke: Kritische Studienausgabe, vol. 5, p. 87, eds. Giorgio Colli and Mazzino Montinari, Berlin, de Gruyter (1980). Beyond Good and Evil, "Fourth Part: Maxims and Interludes," section 75 (1886).)
Man is a creative retrospection of nature upon itself.
(Friedrich Von Schlegel (1772-1829), German philosopher. Idea 28 in Selected Ideas (1799-1800), translated by Ernst Behler and Roman Struc, Dialogue on Poetry and Literary Aphorisms, Pennsylvania University Press (1968).)