"The heart does not draw the blood, but propels it."

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

"The blood is the source of life, and the heart is the fountain thereof."

"It is not simply by chance that the heart is placed in the midst of the body, as if it were the sun of the microcosm."

"To search for truth is to search for God."