"The lady with the lamp is a very pretty picture; but I am not a lady with a lamp. I am a ministering angel."

"I am not a genius, but I am a hard worker."

"I am not a woman. I am a machine. I am a thinking machine, but I have no feelings."

"The very first requirement in a hospital is that it should do the sick no harm."

"The world is a place of infinite possibilities, if only we have the courage to seize them."