To know oneself, one should assert oneself.
Be thine own palace, or the world's thy jail.
By failing to prepare, you are preparing to fail.
You never know what motivates you.
Leap, and the net will appear.
I can, therefore I am.
Always desire to learn something useful.
Problems are not stop signs, they are guidelines.
Things do not happen. Things are made to happen.
Well done is better than well said.
Nuclear arms and atomic power represent a technology in which coexistence with man is extremely difficult.