The artist's life is to be where life is, active life, found in neither ivory tower nor concrete shelter; he must be out listening to everything, looking at everything, and thinking it all out afterward.

Disease an never be conquered, can never be quelled by emotion's willful screaming or faith's symbolic prayer. It can only be conquered by the energy of humanity and the cunning in the mind of man. In the patience of a Curie, in the enlightenment of a Faraday, a Rutherford, a Pasteur, a Nightingale, and all other apostles of light and cleanliness, rather than of a woebegone godliness, we shall find final deliverance from plague, pestilence, and famine.

When one has reached 81... one likes to sit back and let the world turn by itself, without trying to push it.

The hallway of every man's life is paced with pictures; pictures gay and pictures gloomy, all useful, for if we be wise, we can learn from them a richer and braver way to live.

There's nothing so passionate as a vested interest disguised as an intellectual conviction.

Money does not make you happy but it quiets the nerves.

When I stepped from hard manual work to writing, I just stepped from one kind of hard work to another.