Take care that you entertain no notions unsuitable to virtue and reasonable nature.

Be like the cliff against which the waves continually break; but it stands firm and tames the fury of the water around it.

In one way an arrow moves, in another way the mind. The mind indeed, both when it exercises caution and when it is employed about inquiry, moves straight onward not the less, and to its object.

The time is at hand when you will have forgotten everything; and the time is at hand when all will have forgotten you. Always reflect that soon you will be no one, and nowhere.

Loss is nothing else but change, and change is Nature's delight.

Do not waste what remains of your life in speculating about your neighbors, unless with a view to some mutual benefit. To wonder what so-and-so is doing and why, or what he is saying, or thinking, or scheming -- in a word, anything that distracts you from fidelity to the ruler within you -- means a loss of opportunity for some other task.

Nature set a limit on sleep - as it did on eating and drinking. And youre over the limit. But not of working. There youre still below your quota. You dont love yourself enough. Or youd love your nature too and what it demands of you. People who love what they do wear themselves down doing it. They even forget to wash and eat.