I have the responsibility of over four million people, and I am in a position to do good, to be able to bring about a new life for my people, and I will continue to move in that direction. It's a burden, but it needs to be done, and you have to have the courage and wisdom to see it through.

I spent every night until four in the morning on my dissertation, until I came to the point when I could not write another word, not even the next letter. I went to bed. Eight o'clock the next morning I was up writing again.

DNA is a code of four letters; proteins are made up of amino acids which come in 20 forms. So the ribosome is a very clever machine that reads one language and operates in another.

If an alien with an accounting degree touched down in America, it might conclude that we're a weird cult that spends 11 months living frugally and four crazy weeks buying tons of stuff we don't need. It wouldn't be entirely wrong, either.

I'm working harder now than ever before. I couldn't turn down the BBC job because I've never been offered the opportunity of killing three or four people on screen before!

For years, I believed that anything worth doing was worth doing early. In graduate school, I submitted my dissertation two years in advance. In college, I wrote my papers weeks early and finished my thesis four months before the due date. My roommates joked that I had a productive form of obsessive-compulsive disorder.

With four perfectionists in the band, we have a hard time reaching perfection.