Science herself consults her heart when she lays it down that the infinite ascertainment of fact and correction of false belief are the supreme goods for man.

The mind is made up by what it feeds upon.

Intelligence is a fixed goal with variable means of achieving it.

There is but one unconditional commandment ... to bring about the very largest total universe of good which we can see.

Deepest principle of human nature is to be appreciated.

Once a decision is reached, stop worrying and start working.

I am done with great things and big things, great institutions and big success, and I am for those tiny, invisible molecular moral forces that work from individual to individual, creeping through the crannies of the world like so many rootlets, or like the capillary oozing of water, yet which if you give them time, will rend the hardest monuments of man's pride.