One improvement I have learned from my childhood experience with my father: I do not threaten punishment in the morning. That was awful. Late into the night I would lie awake tossing and wondering what he was going to do to me. Usually he did nothing. A quiet, impressive 'talking to' was all I got.

In science, probably ninety-nine percent of the knowable has to be discovered. We know only a few streaks about astronomy. We are only beginning to imagine the force and composition of the atom. Physics has not yet found any indivisible matter, or psychology a sensible soul.

Nothing is done. Everything in the world remains to be done or done over.

If we would leave parties to the politicians, and would vote not for the party, not even for men, but for the city, and the State, and the nation, we should rule parties, and cities, and States, and nation.

My father, the practical joker, did not care for practical jokes on himself; he did not encourage the practice in me.

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

It is privilege that causes evil in the world, not wickedness, and not men.