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A picture must be a thing in itself, not a representation of something else.

"Every experiment is a conversation with nature, and nature always has something to say."

To love truth for truth's sake is the principal part of human perfection in this world, and the seed-plot of all other virtues.

英國女王伊麗莎白二世來華訪問時想見他，他說

The best decisions are made with both data and intuition.

Education is the art of making man ethical.

I'm not so interested in how things look as in what they mean.