The wise does at once what the fool does at last.
It's always too early to quit.
After a storm comes a calm.
If you've got a talent, protect it.
To know oneself, one should assert oneself.
By failing to prepare, you are preparing to fail.
The dog that trots about finds a bone.
Be thine own palace, or the world's thy jail.
Well done is better than well said.
If you can dream it, you can do it.
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.