I can, therefore I am.
Do not weep do not wax indignant. Understand.
If you think you can do it, you can.
To be a good loser is to learn how to win.
Be thine own palace, or the world's thy jail.
Well done is better than well said.
It's always too early to quit.
What you do today can improve all your tomorrows.
The wise does at once what the fool does at last.
Begin to be now what you will be hereafter.
Science fiction is no more written for scientists that ghost stories are written for ghosts.