"Every man is a creature of the age in which he lives, and few are able to raise themselves above the ideas of the times."

"It is difficult to free fools from the chains they revere."

"The more we are enlightened, the more we are free."

"What is tolerance? It is the prerogative of humanity. We are all full of weakness and errors; let us reciprocally pardon each other's follies—it is the first law of nature."

"The human brain is a complex organ with the wonderful power of enabling man to find reasons for continuing to believe whatever he wants to believe."