I can, therefore I am.
What you do today can improve all your tomorrows.
The most effective way to do it, is to do it.
Never complain and never explain.
To know oneself, one should assert oneself.
The wise does at once what the fool does at last.
If you're going through hell, keep going.
Well done is better than well said.
Be gentle to all and stern with yourself.
Begin to be now what you will be hereafter.
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.