Quality is not an act, it is a habit.
Be thine own palace, or the world's thy jail.
After a storm comes a calm.
To be a good loser is to learn how to win.
You never know what motivates you.
The wise does at once what the fool does at last.
Be gentle to all and stern with yourself.
Be kind whenever possible. It is always possible.
Begin to be now what you will be hereafter.
The dog that trots about finds a bone.
Science fiction is an amazing literature: plot elements that you would think would be completely worn out by now keep changing into surprising new forms.