If you think you can do it, you can.
I can, therefore I am.
Quality is not an act, it is a habit.
The secret of getting ahead is getting started.
If you've got a talent, protect it.
The wise does at once what the fool does at last.
Only the educated are free.
Never complain and never explain.
You never know what motivates you.
Problems are not stop signs, they are guidelines.
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.