Leap, and the net will appear.
If you think you can do it, you can.
Be thine own palace, or the world's thy jail.
If you've got a talent, protect it.
Be kind whenever possible. It is always possible.
If you can dream it, you can do it.
Never complain and never explain.
What you do today can improve all your tomorrows.
Be gentle to all and stern with yourself.
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.