“Quid quid movetur ab alio movetur"(nothing moves without having been moved).”

“Wretched, ephemeral race, children of chance and tribulation, why do you force me to tell you the very thing which it would be most profitable for you not to hear? The very best thing is utterly beyond your reach: not to have been born, not to be, to be nothing. However, the second best thing for you is: to die soon”

“He who is to be a good ruler must have first been ruled”

“All who have meditated on the art of governing mankind have been convinced that the fate of empires depends on the education of youth.”

“I have gained this by philosophy; I do without being ordered what some are constrained to do by their fear of the law.”

“And further, observing that all this indeterminate substance is in motion, and that no true predication can be made of that which changes, they supposed that it is impossible to make any true statement about that which is in all ways and entirely changeable. For it was from this supposition that there blossomed forth the most extreme view of those which we have mentioned, that of the professed followers of Heraclitus, and such as Cratylus held, who ended by thinking that one need not say anything, and only moved his finger; and who criticized Heraclitus for saying that one cannot enter the same river twice, for he himself held that it cannot be done even once.”

“Even when laws have been written down, they ought not always to remain unaltered.”