The hour of our death will come soon; see then how it will be with you in another world; for today a man is, tomorrow he is not. And when he is out of sight, he is quickly out of mind. How dull and hard is the man’s heart who thinks only of the present and does not look for what is to come! You should so order all your thoughts and actions as if you were to die today.
-Thomas A Kempis, The Imitation of Christ