Zeno of Sidon

Zeno was born in the city of Sidon. He was a contemporary of Cicero, who heard him when at Athens. He was sometimes termed the "leading Epicurean." () He was a disciple of Apollodorus, and Cicero and Diogenes Laërtius both describe him as an accurate and polished thinker. ==Philosophy==

Zeno held that happiness is not merely dependent upon present enjoyment and prosperity, but also on a reasonable expectation of their continuance and appreciation. and On Anger. Zeno also studied the philosophy of mathematics based on the derivation of all knowledge from experience. He criticized Euclid, seeking to show that deductions from the fundamental principles () of geometry cannot, on their own, be proved: ==Notes==