"The advantage of the emotions is that they lead us astray, and the advantage of science is that it is not emotional."

"Women are meant to be loved, not to be understood."

"A truly popular man is a man who knows nothing about art, and whose brain is as soft as his heart."

"I am so clever that sometimes I don't understand a single word of what I am saying."

"A man who does not think for himself does not think at all."