History is full of people who out of fear, or ignorance, or lust for power has destroyed knowledge of immeasurable value which truly belongs to us all. We must not let it happen again.

Somewhere, something incredible is waiting to be known.

It is far better to grasp the universe as it really is than to persist in delusion, however satisfying and reassuring.

The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.

Imagination will often carry us to worlds that never were. But without it we go nowhere.

I don't want to believe. I want to know.

The absence of evidence is not the evidence of absence.

The brain is like a muscle. When it is in use we feel very good. Understanding is joyous.

We live in a society exquisitely dependent on science and technology, in which hardly anyone knows anything about science and technology.

For small creatures such as we the vastness is bearable only through love.

You have to know the past to understand the present.

sometimes you don't need a goal in life, you don't need to know the big picture. you just need to know what you're going to do next!

If words are the truth, what is living for?

It is good to work for your living.

Let the tree of the Knowledge of Good and Evil fall, soundless in the moldering woods.

I love the name of honor, more than I fear death.

I'd sooner live among people who don't cheat at cards than among people who are earnest about not cheating at cards.

Okayyyyy,” Isabelle said in a low voice, “When did Brother Zachariah get hot?

Boxing is a place where, if you haven't done the training, that's going to be exposed very quickly.

I guess the more serious you play something, if the context is funny, then it will be funny and it doesn't really require you to be necessarily, explicitly humorous, or silly.