The wise does at once what the fool does at last.
Always desire to learn something useful.
To know oneself, one should assert oneself.
Either you run the day or the day runs you.
The most effective way to do it, is to do it.
Well done is better than well said.
Problems are not stop signs, they are guidelines.
Do not weep do not wax indignant. Understand.
The secret of getting ahead is getting started.
Expect problems and eat them for breakfast.
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.