Be gentle to all and stern with yourself.
Either you run the day or the day runs you.
Be thine own palace, or the world's thy jail.
Well done is better than well said.
The secret of getting ahead is getting started.
Never complain and never explain.
If you think you can do it, you can.
What you do today can improve all your tomorrows.
Go for it now. The future is promised to no one.
Without hard work, nothing grows but weeds.
In science there is only physics all the rest is stamp collecting.