""I have observed that the world has suffered far less from ignorance than from pretensions to knowledge. It is not skeptics or explorers but fanatics and ideologues who menace decency and progress. No agnostic ever burned anyone at the stake or tortur."
(Daniel J. Boorstin, American historian and author / 1914 - 2004)
"Believe those who seek the truth, doubt those who find it; doubt all, but do not doubt yourself."
(André Gide / 1869-1951 / Journal 1939-1949)
"Great intellects are skeptical."
(Friedrich Nietzsche / 1844-1900 / The Antichrist / 1888)
"The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts."
(Bertrand Russell / 1872-1970)
"There is a kind of courtesy in skepticism. It would be an offense against polite conventions to press our doubts too far."
(George Santayana / 1863-1952 / The Life of Reason / 1905)
"The fact that a believer is happier than a skeptic is no more to the point than that a drunken man is happier than a sober one. The happiness of credulity is a cheap and dangerous quality."
(George Bernard Shaw / 1856-1950 / The Preface to Androcles and the Lion / 1912)