As a day well spent makes sleep seem pleasant, so a life well employed makes death pleasant. A life well spent is long. - Leonardo da Vinci

As a well-spent day brings a happy sleep, so a well-employed life brings a happy death

As a well-spent day brings a happy sleep, so a well-employed life brings a happy death.

As a day well spent procures a happy sleep, so a life well employed procures a happy death.

I know that there are numberless people who would, to satisfy a whim, destroy God and all the universe.

O Man, who will discern in this work of mine the wonderful works of Nature, if you think it would be a criminal thing to destroy it, reflect how much more criminal it is to take the life of a man; and if this, his external form, appears to thee marvellously constructed, remember that it is nothing as compared with the soul that dwells in that structure; for that indeed, be it what it may, is a thing divine. Leave it then to dwell in His work at His good will and pleasure, and let not your rage or malice destroy a life — for indeed, he who does not value it, does not himself deserve it.

Study without desire spoils the memory, and it retains nothing that it takes in.