My father made with me one serious mistake which I see parents about me making. He got himself somehow into the awkward position of an authority; I thought he knew and was right on everything - for a while.

I am really puzzled to understand myself.

The commercial spirit is the spirit of profit, not patriotism; of credit, not honor; of individual gain, not national prosperity; of trade and dickering, not principle.

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

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.

We know that there is no absolute knowledge, that there are only theories; but we forget this. The better educated we are, the harder we believe in axioms.

Art is like a border of flowers along the course of civilization.