Available energy is the main object at stake in the struggle for existence and the evolution of the world.

If you are out to describe the truth, leave elegance to the tailor.

Bring forward what is true, Write it so that it is clear, Defend it to your last breath!

Nothing is more practical than a good theory.

A mathematician will recognise Cauchy, Gauss, Jacobi or Helmholtz after reading a few pages, just as musicians recognise, from the first few bars, Mozart, Beethoven or Schubert.

The life contest is primarily a competition for available energy.

Thermodynamics, correctly interpreted, does not just allow Darwinian evolution; it favors it.

Which is more remarkable fact about America: that millionaires are idealists or idealists become millionaires.

In my view all salvation for philosophy may be expected to come from Darwin's theory

Bring forward what is true. Write it so that it is clear. Defend it to your last breath.

It remains for you to save one before saving others, to lead one before leading others.

I believe one of the best things about managing people is that we can influence lives in a positive way. That's basically what a manager is about. When I can do that, I am very happy.

If you clean it up, get analytical, all the subtle joy and emotion you felt in the first place goes flying out the window.

Gaiety alone, as it were, is the hard cash of happiness; everything else is just a promissory note.

I loved the idea that biology was logical.

I'm a person who has, to a certain extent, redefined where I should be. I started off in Brooklyn and Queens and I wasn't supposed to come to Manhattan.

My older brother had a lot of Elvis on vinyl, and really, that was my first introduction to music during the Fifties.

The envious will die, but envy never.

The process is the reality.

Strict orthodoxy can cost too much if it has to be bought at the price of love. All the orthodoxy in the world will never take the place of love.