Formerly, people thought that if matter disappeared from the universe, space and time would remain. Relativity declares that space and time would disappear with matter.

Thought is the organizing factor in man, intersected between the causal primary instincts and the resulting actions.

If I had my life to live over again, I would elect to be a trader of goods rather than a student of science. I think barter is a noble thing.

On the left-hand side of the field equation we may add the fundamental tensor guv, multiplied by a universal constant, -λ, at present unknown, without destroying the general covariance.

The great need to grasp principles had caused me to spend most of my time on fruitless persuits.

I no longer believed in the known God of the Bible, but rather in the mysterious God expressed in nature.

I see my life in terms of music.