Celestial mechanics is the origin of dynamical systems, linear algebra, topology, variational calculus and symplectic geometry.

Mathematics is a part of physics. Physics is an experimental science, a part of natural science. Mathematics is the part of physics where experiments are cheap.

The existence of mysterious relations between all these different domains is the most striking and delightful feature of mathematics (having no rational explanation).

Cryptography has generated number theory, algebraic geometry over finite fields, algebra, combinatorics and computers.

Hydrodynamics procreated complex analysis, partial differential equations, Lie groups and algebra theory, cohomology theory and scientific computing.

The happiness of mankind, if it ever should come to pass, would still leave men asking: Why? What point to it? To what end?

It's best to let her go, " he says.No, no, that's wrong. It's never right to give up on someone.

I don't mourn the loss of my childhood; I mourn because everything, including (my) childhood, is lost.

When a banana gets rotten people love to tell you that you can make banana bread out of it. I have never seen anyone actually do it.

Night falls fast. Today is the past.

Style is originality; fashion is fascism. The two are eternally and unalterably opposed.

The certain mark by which a Christian community can be recognized is the preaching of the gospel in its purity.

Impossible is just a big word thrown around by small men who find it easier to live in the world they've been given than to explore the power they have to change it.

Danger breeds best on too much confidence.

I was working on the proof of one of my poems all the morning, and took out a comma. In the afternoon I put it back again.