Pericles had a great reputation as an orator but he died just before the Athenians started publishing speeches (or paying other dudes to write them). We have some sayings of his in Plutarch's biography, but they're just one-liners ("Aegina is the eyesore of the Piraeus"), so all we have are invented (not to say wholly fictional) representations in Thucydides and Xenophon's Memorabilia.