“Remember how long you have been putting off these things, and how often you have received an opportunity from the gods, and yet do not use it. You must now at least perceive of what universe you are a part, and from what administrator of the universe your existence flows, and that a limit of time is fixed for you, which if you do not use for clearing away the clouds from your mind, it will go and you will go, and it will never return.”
Marcus Aurelius – Meditations