Where a man can live, he can also live well.
Leave other people's mistakes where they lie.
Past and future have no power over you. Just the present - and even that can be minimized.
We must press on then, in haste; not simply because every hour brings us nearer to death, but because even before then our powers of perception and comprehension begin to deteriorate.
Both happiness and unhappiness depend on perception
Always bear this in mind, that very little indeed is necessary for living a happy life.