If you think you can do it, you can.
Know or listen to those who know.
To be a good loser is to learn how to win.
Either you run the day or the day runs you.
Do not weep do not wax indignant. Understand.
The wise does at once what the fool does at last.
After a storm comes a calm.
It's always too early to quit.
Go for it now. The future is promised to no one.
Who seeks shall find.
All the mathematical sciences are founded on relations between physical laws and laws of numbers, so that the aim of exact science is to reduce the problems of nature to the determination of quantities by operations with numbers.