I can, therefore I am.

The dog that trots about finds a bone.

Be gentle to all and stern with yourself.

It's always too early to quit.

To be a good loser is to learn how to win.

Begin to be now what you will be hereafter.

If you've got a talent, protect it.

Go for it now. The future is promised to no one.

If you think you can do it, you can.