What one has, one ought to use; and whatever he does, he should do with all his might.
My dear Scipio and Laelius. Men, of course, who have no resources in themselves for securing a good and happy life find every age burdensome. But those who look for all happiness from within can never think anything bad which Nature makes inevitable.
O philosophy, life's guide! O searcher-out of virtue and expeller of vices! What could we and every age of men have been without thee? Thou hast produced cities; thou hast called men scattered about into the social enjoyment of life.
Quid? Quod eadem mente res dissimillimas comprehendimus, ut colorem saporem, calorem, odorem, sonum? Quae numquam quinque nuntiis animus cognosceret, nisi ad eum omnia referrentur et is omnium iudex solus esset.