Be thine own palace, or the world's thy jail.
If you're going through hell, keep going.
The most effective way to do it, is to do it.
What you do today can improve all your tomorrows.
Well done is better than well said.
Do not weep do not wax indignant. Understand.
Be gentle to all and stern with yourself.
If you think you can do it, you can.
Know or listen to those who know.
By failing to prepare, you are preparing to fail.
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.