"Ut nemo in sese tentat descendere! nemo!Sed praecedenti spectatur mantica tergo."

"I distrust every idea that doesn't seem obsolete and grotesque to my contemporaries."

"The plan by which Nature preserves, regulates and produces her beings, though continually before the eyes o…"

"I do not think it can be questioned that sympathy is a genuine motive, and that some people at some times a…"

"I am a marxist, a leninist and I don't even consider disagreeable Stalin, who saved us from Hitler, more th…"

"If religion is only human, and its form is man’s form, it follows that everything in religion is true."

"Good breeding in cattle depends on physical health, but in men on a well-formed character."