To know oneself, one should assert oneself.
Be gentle to all and stern with yourself.
Only the educated are free.
Things do not happen. Things are made to happen.
Problems are not stop signs, they are guidelines.
If you think you can do it, you can.
What you do today can improve all your tomorrows.
To be a good loser is to learn how to win.
You never know what motivates you.
The most effective way to do it, is to do it.
The initial motivation of the experiment which led to this discovery was a subconscious feeling for the inexhaustible wealth of nature, a wealth that goes far beyond the imagination of man.