"This only is certain, that there is nothing certain; and nothing more miserable and yet more arrogant than man."

"No mortal man, moreover is wise at all moments."

"In these matters the only certainty is that nothing is certain."

"In comparing various authors with one another, I have discovered that some of the gravest and latest writers have transcribed, word for word, from former works, without making acknowledgment."

"Why is it that we entertain the belief that for every purpose odd numbers are the most effectual?"

"The best plan is to profit by the folly of others."

"Democracy means simply the bludgeoning of the people by the people for the people."

"Security is a process, not a product."

"I intend to live forever or die trying."

"To find everything profound - that is an inconvenient trait. It makes one strain one's eyes all the time, and in the end one finds more than one might have wished."

"Life does not cease to be funny when people die; any more than it ceases to be serious when people laugh."

"One must marry one's feelings to one's beliefs and ideas. That is probably the only way to achieve a measure of harmony in one's life."