"Man is a credulous animal, and must believe something; in the absence of good grounds for belief, he will be satisfied with bad ones."

"In all things it is a good idea to hang a question mark now and then on the things we have taken for granted."

"Fear is the main source of superstition, and one of the main sources of cruelty. To conquer fear is the beginning of wisdom."

"A stupid man's report of what a clever man says can never be accurate, because he unconsciously translates what he hears into something he can understand."

"Religion is something left over from the infancy of our intelligence, it will fade away as we adopt reason and science as our guidelines."

"If there were in the world today any large number of people who desired their own happiness more than they desired the unhappiness of others, we could have paradise in a few years."

"The invariable mark of wisdom is to see the miraculous in the ordinary."

"Art is dangerous. It is one of the attractions: when it ceases to be dangerous you don't want it."

"A proverb and a by-word among all people,"

"If you must love your neighbor as yourself, it is at least as fair to love yourself as your neighbor."

"Ridicule is generally made use of to laugh men out of virtue and good sense, by attacking everything praiseworthy in human life."

"There is a lion in the way; a lion is in the streets."