But anything that can be called "rigor" is lost exactly where the things become interesting and non trivial.

Understanding what and why did not work may be more instructive than celebrating our successes.

But 'the physical level of rigor' is higher on certainty than the logical one, since reproducible experiments are more reliable than anybody's, be it Hilbert's, Einstein's or Gödel's intuition.

There is no significant difference between human activities and those by amoebas and even bacteria, well, on the GRAND SCALE.

Flexibility is the greatest strength.

Do you know the difference between education and experience? Education is when you read the fine print experience is what you get when you don't.

Climate change is the Everest of all problems, the thorniest challenge facing humankind.

The more we exile ourselves from nature, the more we crave its miracle waters.

Are you prepared to take a dive into the deep end of my head?

I don't have any type of sketch-comedy or stand-up background.

The highest duty of the man is not to his father, but to his wife; and for the sake of that woman he abandons all other earthly ties, should any of these happen to interfere with that relation.

We've all been hurt by words before. So before you speak, think about how your words might affect someone else.

If you can't stand a little sacrifice and you can't stand a trip across the desert with limited water, we're never going to straighten this country out.

Nothing useless can be truly beautiful.