The war began in 431 by a Theban attack on Plataea, the little town just over the Attic frontier which had been allied with Athens for nearly a century and protected her against invasion from the north. This city had long been hated by Thebes as a deserter from her own league; it alone of Boeotian towns had not joined the Persians. Burning with the desire to capture it, a body of Thebans entered the place by night, seizing the chief positions. But in the morning their scanty numbers were apparent; recovering from panic the Plataeans overwhelmed the invaders and massacred them. This open violation of the treaty kindled the war-spirit. Both sides armed, Sparta being more popular as pretending to free Greece from a tyrant. Their last ambassador on leaving Athenian territory said: "This day will be the beginning of mighty woes for Greece". The Spartans invaded Attica, cutting down the fruit trees and forcing the country folk into the city; the Athenians replied by ravaging parts of Peloponnese and Megara. The funeral of the first Athenian victims of the war was the occasion of a remarkable speech. Pericles in delivering it expounds the Athenian ideal of life. "We do not compete with other constitutions, we are rather a pattern for the rest. In our democracy all are equal before the law; each man is promoted to public office not by favour but by merit, according as he can do the State some service. We love beauty in its simplicity, we love knowledge without losing manliness. Our citizens can administer affairs both private and public; our working classes have an adequate knowledge of politics. To us the most fatal error is the lack of theoretical instruction before we attempt any duty. In a word, I say that Athens is an education for all Greece; individually we can prove ourselves competent to face the most varied forms of human activity with the maximum of grace and adaptability.... We have forced the whole sea and every land to open to our enterprise. Look daily at the material power of the city and love her passionately. Her glory was won by men who did their duty and sacrificed themselves for her. The whole world is the sepulchre of famous men; their memory is not only inscribed on pillars in their own country, it lives unwritten in the hearts of men in alien lands."