Be thine own palace, or the world's thy jail.
If you're going through hell, keep going.
The most effective way to do it, is to do it.
Know or listen to those who know.
Never complain and never explain.
Be kind whenever possible. It is always possible.
Always desire to learn something useful.
The wise does at once what the fool does at last.
Either you run the day or the day runs you.
Things do not happen. Things are made to happen.
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.