Let it be your constant method to look into the design of people's actions, and see what they would be at, as often as it is practicable; and to make this custom the more significant, practice it first upon yourself.
Marcus AureliusBut this is altogether a mark of the most common sort of men, for it is in your power whenever you choose to retire into yourself.
Marcus AureliusConsider in what condition both in body and soul a man should be when he is overtaken by death; and consider the shortness of life, the boundless abyss of time past and future, the feebleness of all matter.
Marcus Aurelius