"Man is naturally good, and it is only through institutions that he becomes bad."

"We are born weak, we need strength; we are born helpless, we need aid; we are born foolish, we need reason. All that we lack at birth, all that we need when we come to man's estate, is the gift of edu…"

"The most useful and least advanced of all human knowledge seems to me to be that of man."

"Everything is in a state of flux on this earth. Nothing keeps a form for long, and our affections, which are attached to external things, pass and change as they do."

"No man has any natural authority over his fellow men."