"I have not been afraid to publish my thoughts, knowing that truth, though for a time suppressed, will at last prevail."

"The heart of animals is the foundation of their life, the sovereign of everything within them, the sun of their microcosm, that upon which all growth depends, from which all power proceeds."

"The pulse is nothing more than the impulsion of the blood into the arteries."

"I avow myself the partisan of truth alone."

"I am not so mad, nor have I been so caught up in the opinion of others, as to believe that I have discovered anything so great as to be worthy of the name of a new opinion."