The secret of the universe is this: The universe doesn't care. That part of the job is yours.

If you're passing the buck, don't ask for change.

Adolescence is that time in your life when you discover your ability to be depressed.

Morality—like velocity—is relative. The determination of it depends on what the objects around you are doing. All one can do is measure one's position in relation to them; never can one measure one's velocity or morality in terms of absolutes.

My approach to 'Star Trek' was, 'I know science fiction, and I know screen writing.' That was very arrogant of me, but you really need to be a little bit arrogant to think that what you have to say is good enough to justify the expense of hundreds of thousands - now millions of dollars - to make an episode of the TV show.

Contentment is the continuing act of accepting the process of your own life.

It's almost always dangerous to be right too soon.