"The heart is like a king, sitting in the middle of his kingdom, sending out commands to the periphery."

"Nature is nowhere accustomed to exhibit herself more openly than in her failures."

"The valves in the veins are so constructed as to permit the passage of blood towards the heart, but to prevent its return."

"The circulation of the blood is a new doctrine, and I doubt not but it will meet with its opponents."

"The greatest pleasure is to be found in the contemplation of truth."