(c. 4th century BC) Socrates, (470 BC-399 BC) Solomon, (970-931 BC) Shukracharya (8th century BCE) Speusippus, (410-339 BC) Stilpo, (380-330 BC) Strato of Lampsacus, (c. 340-c. 268 BC) Sun Tzu, (4th century BC) Sung Hsing (or Sung Tzu), (360-290 BC) Su Qin (380-284 BC) T Thales, (c. 635 BC-543 BC) Theodorus of Cyrene, (c. 340-c. 250 BC) Theophrastus, (372-287 BC) Thrasymachus, (5th century BC) Thucydides, (c. 460-c. 400 BC) Timaeus of Locri, (5th century BC) Timon of Phlius, (c. 300 BC) Tiruvalluvar, (c. 1st century BC–2nd century CE) U Uddalaka Aruni (c. 1000 BC) V Vasishtha (12th century BCE) Vyasa W X Xenocrates, (396-314 BC) Xenophanes of Colophon, (570-480 BC) Xenophon, (427-355 BC) Xun Zi (or Hsun Tzu), (c. 310-237 BC)* Xu Xing Y Yajnavalkya, (fl. c. 7th century BC) Yang Chu, (370-319 BC) Yang Xiong (or Yang Hsiung) (53 BC-AD 18) Z Zengzi (505 BC-436 BC) Zeno of Citium (333 BC-264 BC) Zeno of Elea (c. 495 BC-c. 430 BC) Zeno of Sidon (1st century BC) Zeno of Tarsus (3rd century BC) Zhang Yi (c. 329-309 BC) Zhuang Zi (or Chuang Tzu or Chuang Chou), (c. 300 BC) Zichan (522 BC) Zisi (c. 481-402 BC) Zoroaster Zou Yan (3rd century BC) See also Lists of philosophers List of philosophers born in the 1st through 10th centuries List of philosophers born in the 11th through 14th centuries List of philosophers born in the 15th and 16th centuries List of philosophers born in the 17th century List of philosophers born in the 18th century List of philosophers born in the 19th century List of philosophers born in the 20th century Notes 0