Let art, then, imitate nature, find what she desires, and follow as she directs. For in invention nature is never last, education never first; rather the beginnings of things arise from natural talent, and ends are reached by discipline.
Marcus Tullius CiceroBut if you should take the bond of goodwill out of the universe no house or city could stand, nor would even the tillage of the fields abide. If that statement is not clear, then you may understand how great is the power of friendship and of concord from a consideration of the results of enmity and disagreement. For what house is so strong, or what state so enduring that it cannot be utterly overthrown by animosities and division?
Marcus Tullius CiceroIt is a common saying that many pecks of salt must be eaten before the duties of friendship can be discharged.
Marcus Tullius CiceroCivilized people are taught by logic, barbarians, by necessity, communities by tradition; and the lesson inculcated even in wild beasts by nature itself. They learn that they have to defend their own bodies and persons lives from violence of any and every kind by all means within their power.
Marcus Tullius Cicero