My morale has never been higher than since I stopped asking for grants to keep my lab going.

Science differs from politics or religion, in precisely this one discipline: we agree in advance to simply reject our own findings when they have been shown to be in error.

The freedom to make and admit mistakes is at the core of the scientific process. If we are asked to forswear error, or worse, to say that error means fraud, then we cannot function as scientists.

Everyone calls himself a friend, but only a fool relies on it: nothing is commoner than the name, nothing rarer than the thing.

The universe is in fact a multiverse.

I was surprised to find myself so much fuller of Faults than I had imagined, but I had the Satisfaction of seeing them diminish.

Fine natures are like fine poems; a glance at the first two lines suffices for a guess into the beauty that waits you if you read on.

He who has no opinion of his own, but depends upon the opinion and taste of others, is a slave.

It's a funny thing with documentary films - you want them to feel as entertaining and as gripping as a fictional film. With a fictional film you want it to feel as realistic as a documentary film.

We make conscious choices to do something a certain way.

It's a shame that we have to use whatever leverage we have in Congress to get the president to deal with the biggest problem confronting our future. And that's our excessive spending.

Don't let anyone rob you of hope.

Some of the conflict of interest laws do apply to the president, particularly The Emoluments Clause to "The Constitution," which prohibits any type of benefit from a foreign government.