Be gentle to all and stern with yourself.
To be a good loser is to learn how to win.
Only the educated are free.
By failing to prepare, you are preparing to fail.
You never know what motivates you.
The dog that trots about finds a bone.
After a storm comes a calm.
Well done is better than well said.
The secret of getting ahead is getting started.
Be kind whenever possible. It is always possible.
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.