[T]omorrow is a new day. You shall begin it well & serenely, & with too high a spirit to be cumbered with your old nonsense. This day ... is too dear with its hopes & invitations to waste a moment on the rotten yesterdays.
What we are today comes from our thoughts of yesterday, and our present thoughts build our life of tomorrow: our life is the creation of our mind. If a man speaks or acts with an impure mind, suffering will follow him as the wheel of the cart follows the beast that draws the cart. If a man speaks or acts with a pure mind, joy follows him as his own shadow.
The body loaded by the excess of yesterday, depresses the mind also, and fixes to the ground this particle of divine breath.
[Lat., Quin corpus onustum
Hesternis vitiis, animum quoque praegravat una
Atque affigit humo divinae particulam aurae.]
But our minds are bound to the yardstick of yesterday, today and tomorrow, and with that yardstick we try to inquire into the unknown, to measure that which is not measurable.
Seest thou how pale the sated guest rises from supper, where the appetite is puzzled with varieties? The body, too, burdened with I yesterday's excess, weighs down the soul, and fixes to the earth this particle of the divine essence.
You have it now and that is all your whole life is; now. There is nothing else than now. There is neither yesterday, certainly, nor is there any tomorrow.