Know or listen to those who know.
Go for it now. The future is promised to no one.
The wise does at once what the fool does at last.
If you can dream it, you can do it.
Who seeks shall find.
To be a good loser is to learn how to win.
If you're going through hell, keep going.
Things do not happen. Things are made to happen.
What you do today can improve all your tomorrows.
After a storm comes a calm.
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.