The pursuit of excellence is the proper vocation of man.

Absolute certainty is a privilege of uneducated minds and fanatics. - It is, for scientific folk, an unattainable ideal.

The present is no more exempt from the sneer of the future than the past has been.

The next-most difficult thing in the world is to get perspective. The most difficult is to keep it.

Mathematics is, in many ways, the most precious response that the human spirit has made to the call of the infinite.

Mathematics, even in its present and most abstract state, is not detached from life. It is just the ideal handling of the problems of life.

There are situations where the best solution still doesn't make everyone happy. The trick is understanding what's best.

Anyone who tries to make a distinction between education and entertainment doesn't know the first thing about either.

We all try to forget what hurts us, it is sometimes the only way we can continue.

"No" isn't really a word I understand.

I just did whatever it took to keep making music - I slept on couches. You would be amazed at how far $20 can go if you stretch it out.

As the season progresses, it's like the doors open up to all the different worlds that were teased about in the pilot.

At some point, you have to sit down and face the page alone. At some point, the final decisions need to be yours. At some point, you have to give yourself deadlines and stick to them.

- No, no... She shook her head for emphasis. No. His lips twitched. - One 'no' is enough, darling.

Success lasts only three seconds. After that you're the same as you were before you had it.