I can, therefore I am.
Be gentle to all and stern with yourself.
If you can dream it, you can do it.
Quality is not an act, it is a habit.
The wise does at once what the fool does at last.
If you've got a talent, protect it.
Do not weep do not wax indignant. Understand.
To be a good loser is to learn how to win.
Things do not happen. Things are made to happen.
It's always too early to quit.
One of the nice things about science fiction is that it lets us carry out thought experiments.
Some ideas you have to chew on, then roll them around a lot, play with them before you can turn them into funky science fiction.