Be thine own palace, or the world's thy jail.
Problems are not stop signs, they are guidelines.
If you think you can do it, you can.
The most effective way to do it, is to do it.
To know oneself, one should assert oneself.
If you're going through hell, keep going.
I can, therefore I am.
The wise does at once what the fool does at last.
Leap, and the net will appear.
Well done is better than well said.
In 1948 I entered the Massachusetts Institute of Technology, undecided between studies of chemistry and physics, but my first year convinced me that physics was more interesting to me.