Industry and patience are the surest means of plenty.
No employment can be managed without arithmetic, no mechanical invention without geometry.
For the best return on your money, pour your purse into your head.
Don't misinform your Doctor nor your Lawyer.
Be civil to all; serviceable to many; familiar with few; friend to one; enemy to none.
He that pursues two hares at once, does not catch one and lets the other go.