Always desire to learn something useful.
Things do not happen. Things are made to happen.
Only the educated are free.
Either you run the day or the day runs you.
The dog that trots about finds a bone.
To know oneself, one should assert oneself.
Well done is better than well said.
Leap, and the net will appear.
Be thine own palace, or the world's thy jail.
You never know what motivates you.
I spent every night until four in the morning on my dissertation, until I came to the point when I could not write another word, not even the next letter. I went to bed. Eight o'clock the next morning I was up writing again.