Thucydides — Greek Historian

Thucydides was an Athenian historian, political philosopher and general. His History of the Peloponnesian War recounts the 5th century BC war between Sparta and Athens to the year 411 BC. Thucydides has been dubbed the father of "scientific history" because of his strict standards of evidence-gathering and analysis of cause and effect without reference to intervention by the gods, as outlined in his introduction to his work... (wikipedia)

We secure our friends not by accepting favors but by doing them.
The strong do what they have to do and the weak accept what they have to accept.
The secret to happiness is freedom... And the secret to freedom is courage.
Be convinced that to be happy means to be free and that to be free means to be brave. Therefore do not take lightly the perils of war.
Wars spring from unseen and generally insignificant causes, the first outbreak being often but an explosion of anger.