Nothing is more practical than a good theory.

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!

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

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.

Love is a snowmobile racing across the tundra and then suddenly it flips over, pinning you underneath. At night, the ice weasels come.

Sometimes we hurt the ones we love, but hurting ourselves to avoid it doesn’t make it better.

She (a woman politician) will be challenging a system that is still wedded to militarism and that saves billions of dollars a year by underpaying women and using them as a reserve cheap labor supply

I swear, the bigger your muscles get, the duller you are. You become fascinated with carbs and protein and ripped abs and things that are just not interesting at all.

A lot of cities are making a real effort, neighborhood by neighborhood, to make themselves into a place where life can be pretty good.

It is very difficult to get up resentment towards persons whom one has never seen.

The most faithful disciples of Christ have been builders of peace, to the point of forgiving their enemies, sometimes even to the point of giving their lives for them.

I got a dog and named him 'Stay'. Now, I go 'Come here, Stay!' After a while, the dog went insane and wouldn't move at all.

The words fire from my mouth like bullets, ricocheting off the walls before I can even register what I'm saying.

People are just not impressed by me at home.