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Give careful heed to all that concerns your life, but above all train your own intellect; for the greatest thing in the smallest compass is a sound mind in a human body.1 Strive with your body to be a lover of toil, and with your soul to be a lover of wisdom, in order that with the one you may have the strength to carry out your resolves, and with the other the intelligence to foresee what is for your good.