"It is not wealth or ancestry, but rather the spirit of the age, which has raised me to the highest pinnacle of fame."

"The wise man will not be content with the knowledge of things as they are, but will seek to know how they came to be so."

"The world is a living creature."

"What remains to be said is of so novel and unheard of a character that I not only fear injury to myself from the envy of a few, but I tremble lest I have mankind at large for my enemies, so much to wo…"

"The circulation of the blood is a miracle of nature."