Pothinus: "Is it possible that Caesar, the conqueror of the world, has time to occupy himself with such a trifle as our taxes?" Caesar: "My friend, taxes are the chief business of a conqueror of the world.
It's prudent to gain the whole world and lose your own soul. But don't forget that your soul sticks to you if you stick to it; but the world has a way of slipping through your fingers.