A nation can survive its fools, and even the ambitious. But it cannot survive treason from within. An enemy at the gates is less formidable, for he is known and carries his banner openly. But the traitor moves amongst those within the gate freely, his sly whispers rustling through all the alleys, heard in the very halls of government itself.

We can more easily avenge an injury than requite a kindness; on this account, because there is less difficulty in getting the better of the wicked than in making one's self equal with the good.

What is morally wrong can never be advantageous, even when it enables you to make some gain that you believe to be to your advantage. The mere act of believing that some wrongful course of action constitutes an advantage is pernicious.

All great men are partially inspired.

People don't know the value of what they have until it is gone: Freedom suppressed and again regained bites with keener fangs than freedom never endangered.... Liberty is rendered even more precious by the recollection of servitude. Don't wait till freedom is gone before you enjoy, value, support, protect and make the most of it!

How great an evil do you see that may have been announced by you against the Republic? - Videtis quantum scelus contra rem publicam vobis nuntiatum sit?

Enmity is anger watching the opportunity for revenge.