Believe you can and you're halfway there.

The government is us; we are the government, you and I.

When you play, play hard; when you work, don't play at all.

Speak softly and carry a big stick; you will go far.

Nobody cares how much you know, until they know how much you care.

If you could kick the person in the pants responsible for most of your trouble, you wouldn't sit for a month.