"Nature herself makes the wise man rich."

"The freedom of poetic license."

"A mind without instruction can no more bear fruit than can a field, however fertile, without cultivation."

"A happy life consists in tranquility of mind."

"In so far as the mind is stronger than the body, so are the ills contracted by the mind more severe than those contracted by the body."

"The welfare of the people is the ultimate law. (Salus Populi Suprema Est Lex)"

"When you were born, you cried and the world rejoiced. Live your life in such a manner that when you die, the world cries and you rejoice."

"It is easier to stay out than get out."

"The man who moves a mountain begins by carrying away small stones."

"Science is organized knowledge."

"The problem with the common person is that he is so unbearably common!"

"It is one of the worst of errors to suppose that there is any path for safety except that of duty."