Know or listen to those who know.
Never complain and never explain.
To be a good loser is to learn how to win.
Begin to be now what you will be hereafter.
It's always too early to quit.
Expect problems and eat them for breakfast.
Well done is better than well said.
Be gentle to all and stern with yourself.
Who seeks shall find.
The most effective way to do it, is to do it.
The diversity of the phenomena of nature is so great, and the treasures hidden in the heavens so rich, precisely in order that the human mind shall never be lacking in fresh nourishment.