The unknown is the province of the student; it is the field for his lifes adventure, and it is a wide field full of beckonings

The best picture has not yet been painted; the greatest poem is still unsung; the mightiest novel remains to be written; the divinest music has not been conceived, even by Bach. In science, probably ninety-nine percent of the knowable has not yet been discovered.

Nothing is done. Everything in the world remains to be done or done over. The greatest picture is not yet painted, the greatest play isn't written, the greatest poem is unsung. There isn't in all the world a perfect railroad, nor a good government, nor a sound law. Physics, mathematics, and especially the most advanced and exact of the sciences are being fundamentally revised. . . Psychology, economics, and sociology are awaiting a Darwin, whose work in turn is awaiting an Einstein.

Keep your baby eyes (which are the eyes of genius) on what we don't know

My father seemed always to know not only what I was doing, but what I was being.

If we would vote in mass on the more promising ticket, or, if the two are equally bad, would throw out the party that is in, and wait till the next election and then throw out the other party that is in - then, I say, the commercial politician would feel a demand for good government and he would supply it.

The only thing worth having in an earthly existence is a sense of humor.