To be a good loser is to learn how to win.
It's always too early to quit.
You never know what motivates you.
If you think you can do it, you can.
Do not weep do not wax indignant. Understand.
Go for it now. The future is promised to no one.
By failing to prepare, you are preparing to fail.
I can, therefore I am.
If you can dream it, you can do it.
The wise does at once what the fool does at last.
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.