Each living creature is said to be alive and to be the same individual - as for example someone is said to be the same person from when he is a child until he comes to be an old man. And yet, if he's called the same, that's despite the fact that he's never made up from the same things, but is always being renewed, and losing what he had before, whether it's hair, or flesh, or bones, or blood, in fact the whole body.
PlatoPeople regard the same things, some as just and others as unjust, - about these they dispute; and so there arise wars and fightings among them.
PlatoThe most beautiful motion is that which accomplishes the greatest results with the least amount of effort.
Plato