“Good God, man, what is that smell?" He eyed with disgust the doctor's filthy cloak."Life," answered the doctor.”

“Surely you couldn't be a good doctor and a terrible human being---surely the laws of man, if not God, didn't allow it.”

“The Doctor: Doctor Song, you've got that face on again.River: What face?The Doctor: The "He's hot when he's clever" face.River: This is my normal face.The Doctor: Yes it is.River: Oh, shut up.The Doctor: Not a chance.”

“Doctors of Science, what is man that heShould hope to come to a good end? The best is not to have been born.”

“Heard joke once: Man goes to doctor. Says he's depressed. Says life seems harsh and cruel. Says he feels all alone in a threatening world where what lies ahead is vague and uncertain. Doctor says, "Treatment is simple. Great clown Pagliacci is in town tonight. Go and see him. That should pick you up." Man bursts into tears. Says, "But doctor...I am Pagliacci.”

“Doctors think a lot of patients are cured who have simply quit in disgust.”