Problems are not stop signs, they are guidelines.
You never know what motivates you.
Be kind whenever possible. It is always possible.
If you can dream it, you can do it.
Expect problems and eat them for breakfast.
Begin to be now what you will be hereafter.
What you do today can improve all your tomorrows.
It's always too early to quit.
Wherever you are - be all there.
Be gentle to all and stern with yourself.
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.