It's always too early to quit.
Who seeks shall find.
If you've got a talent, protect it.
The wise does at once what the fool does at last.
Be kind whenever possible. It is always possible.
What you do today can improve all your tomorrows.
Always desire to learn something useful.
Wherever you are - be all there.
To be a good loser is to learn how to win.
Leap, and the net will appear.
The history of astronomy is a history of receding horizons.
Equipped with his five senses, man explores the universe around him and calls the adventure Science.