History of the Peloponnesian War

Thus was the enterprise first undertaken upon quarrel of love, and then upon a sudden fear followed this unadvised adventure of Harmodius and Aristogeiton.

And after this time the tyranny grew sorer to the Athenians than it had been before. And Hippias, standing more in fear, not only put many of the citizens to death, but also cast his eye on the states abroad to see if he might get any security from them in this alteration at home.