Strong as I am, it will kill me.

What do you say?
Am I working myself into my grave, in the medical interests of humanity?
_That_ for humanity! I am working for my own satisfaction--for my own pride--for my own unutterable pleasure in beating other men--for the fame that will keep my name living hundreds of years hence.
Humanity! I say with my foreign brethren--Knowledge for its own sake, is the one god I worship.

Knowledge is its own justification and its own reward.

The roaring mob follows us with its cry of Cruelty.

We pity their ignorance.