If you think you can do it, you can.
You never know what motivates you.
What you do today can improve all your tomorrows.
Without hard work, nothing grows but weeds.
Who seeks shall find.
Never complain and never explain.
By failing to prepare, you are preparing to fail.
I can, therefore I am.
Only the educated are free.
Well done is better than well said.
The people who live in a golden age usually go around complaining how yellow everything looks.
I think that one possible definition of our modern culture is that it is one in which nine-tenths of our intellectuals can't read any poetry.