There is a limit circumscribed to your time – if you do not use it to clear away your clouds, it will be gone, and you will be gone, and the opportunity will not return
Marcus AureliusDon't let your imagination to be crushed by life as a whole. Don't try to pictures everything bad that could possibly happen. Stick with the situation at hand. ...Then remind yourself that past and present have no power over you. Only the present.
Marcus AureliusTake full account of what Excellencies you possess, and in gratitude remember how you would hanker after them, if you had them not.
Marcus AureliusIf you separate from . . . everything you have done in the past, everything that disturbs you about the future . . . and apply yourself to living the life that you are living-that is to say, the present-you can live all the time that remains to you until your death in calm, benevolence, and serenity.
Marcus Aurelius