"The greatest mistake in the treatment of diseases is that there are physicians for the body and physicians for the soul, although the two cannot be separated." Plato.

"Science sans conscience n'est que ruine de l'ame." Rabelais (1483-1553).

"The most dangerous physicians are those who, being born actors, imitate born physicians with perfect imposture". (Nietzsche, Human All-too-Human, I, 1878).

" The practice of medicine is an art, not a trade: a calling not a business; a calling in which your heart will be exercised equally with your head. Often the best part of your work will have nothing to do with powders or potions, but with the exercise of an influence of the strong upon the weak, the righteous upon the wicked, the wise upon the foolish".

William Osler

"Whoever undertakes to set himself up as a judge of Truth and Knowledge is shipwrecked by the laughter of the gods".

Albert Einstein

"Science without religion is lame. Religion without science is blind."

 A. Einstein

"There are three things which build and maintain civilization throughout time: pure air, pure water, and pure food.  And as an eternal truth I say unto you, that there are three things which bring the end of civilization, even the mightiest that have ever been and shall ever be, from the beginning-less beginning to the endless end of all time: impure air, impure water, and impure food." - Zenda Avesta, c. 3000 BC.

"All the blood of the body is under the control of the heart and flows in a continuous circle and never stops." Chinese writing, 2697 BC.

"The cure of many diseases remains unknown to the physicians of Hellos (Greece) because they do not study the whole person." Socrates, (470-399 BC).         

"It is part of the cure to wish to be cured." - Seneca (4 BC to 65 AD).

"The doctor of the future will prescribe no drugs but will interest his patients in the care and nutrition of the human frame and in the cause and prevention of disease." - Thomas Edison (1847-1931)

"There are in fact two things, science and opinion. The former begets knowledge, the latter ignorance."

Hippocrates

Good has two meanings: it means both that which is good absolutely and that which is good for somebody.  (Aristotle, The Nicomachean Ethics, vol 7, c340 BC)

The good physician treats the disease; the great physician treats the patient who has the disease.

William Osler 

The man of science has learned to believe in justification, not by faith, but by verification.

Thomas H. Huxley (1825-95)

"I do not know when, but I know that many have come in this century to develop arts and sciences, sow the seeds of a new culture that will flourish, unexpected, sudden, just when the power is deluded into believing they have won."

Giordano Bruno

"Lord, give me strength and ability to understand when I can heal, but give me the wisdom to understand when my profession is useless." 

Prayer of a Doctor in Ancient Egypt.