Know how and how much to tip people who expect gratuities, even in the case of poor service.
A fool is someone whose pencil wears out before its eraser does.
If you're wondering if you're dreaming, you're dreaming.
Be able to draw an illustration as least well enough to get your point across to another person.
What women want is what men want. They want respect.
To acquire knowledge, one must study; but to acquire wisdom, one must observe.