Source: The Great God Pan (1894), Ch. VII : The Encounter in Soho
Context: I can fancy what you saw. Yes; it is horrible enough; but after all, it is an old story, an old mystery played in our day and in dim London streets instead of amidst the vineyards and the olive gardens. We know what happened to those who chanced to meet the Great God Pan, and those who are wise know that all symbols are symbols of something, not of nothing. It was, indeed, an exquisite symbol beneath which men long ago veiled their knowledge of the most awful, most secret forces which lie at the heart of all things; forces before which the souls of men must wither and die and blacken, as their bodies blacken under the electric current. Such forces cannot be named, cannot be spoken, cannot be imagined except under a veil and a symbol, a symbol to the most of us appearing a quaint, poetic fancy, to some a foolish, silly tale. But you and I, at all events, have known something of the terror that may dwell in the secret place of life, manifested under human flesh; that which is without form taking to itself a form. Oh, Austin, how can it be? How is it that the very sunlight does not turn to blackness before this thing, the hard earth melt and boil beneath such a burden?
“In order to know men, something must be chanced. Who risks himself of nothing knows nothing.”
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Joseph Joubert 253
French moralist and essayist 1754–1824Related quotes
“Those who know nothing must believe everything.”
Wer nichts weiß, muss alles glauben.
Source: Aphorisms (1880/1893), p. 21, Aphorismen, in: Schriften, vol. 1, Paetel, Berlin 1893.
“Something must be left to chance; nothing is sure in a sea fight above all.”
Before the battle of Trafalgar [citation needed]
The Battle of Trafalgar (1805)
Les médecins administrent des médicaments dont ils savent très peu, à des malades dont ils savent moins, pour guérir des maladies dont ils ne savent rien.
This attribution to Voltaire appears in Strauss' Familiar Medical Quotations (1968), p. 394, and in publications as early as 1956 http://books.google.pt/books?id=lCtCAQAAIAAJ&q=%22Doctors+are+men+who+prescribe+medicine+of%22&dq=%22Doctors+are+men+who+prescribe+medicine+of%22&hl=pt-PT&sa=X&ei=mbnWUsvDIfTB7Aaw_YD4Dw&redir_esc=y; the quotation in French does not, however, appear to be original, and is probably a relatively modern invention, only quoted in recent (21st century) published works, which attribute it to "Voltaire" without citing any source.
Attributed
This attribution to Voltaire appears in Strauss' Familiar Medical Quotations (1968), p. 394, and in publications as early as 1956 http://books.google.pt/books?id=lCtCAQAAIAAJ&q=%22Doctors+are+men+who+prescribe+medicine+of%22&dq=%22Doctors+are+men+who+prescribe+medicine+of%22&hl=pt-PT&sa=X&ei=mbnWUsvDIfTB7Aaw_YD4Dw&redir_esc=y; the quotation in French does not, however, appear to be original, and is probably a relatively modern invention, only quoted in recent (21st century) published works, which attribute it to "Voltaire" without citing any source.
Original: (fr) Les médecins administrent des médicaments dont ils savent très peu, à des malades dont ils savent moins, pour guérir des maladies dont ils ne savent rien.
Living, Loving, and Learning (1982)
Variant: Risks must be taken because the greatest hazard in life is to risk nothing.
Source: Living Loving and Learning
Context: To love is to risk not being loved in return. To hope is to risk pain. To try is to risk failure, but risks must be taken, because the greatest hazard in life is to risk nothing.
“The world knows nothing of its greatest men.”
Act I, sc. 5.
Philip van Artevelde (1834)