Wright, G. H. von See VON WRIGHT.

wu See YU, WU.

wu-hsing Chinese term meaning 'five phases, processes, or elements'. The five...

Wundt Wilhelm Maximilien (1832–1920), German philosopher and psychologist, a founder of...

wu wei Chinese philosophical term often translated as 'non-action' and associated with...

Wyclif John (c.1330–84), English theologian and religious reformer. He worked for...

Xenocrates See ACADEMY.

Xenophanes (c.570–c.475 B.C.), Greek philosopher, a proponent of an idealized conception...

Xenophon (c.430–c.350 B.C.), Greek soldier and historian, author of several Socratic...

yang See YIN, YANG.

Yang Chu also called Yang Tzu (c.370–319 B.C.), Chinese philosopher most famous...

Yang Hsiung (53 B.C. – A.D. 18), Chinese philosopher who wrote two...

Yen Yuan (1635–1704), Chinese traditionalist and social critic. Like Wang Fu-chih, he...

yi Chinese term probably with an earlier meaning of 'sense of...

Yi Ching See I-CHING.

yin yang, metaphors used in the classical tradition of Chinese philosophy...

Yoga See SANKHYA-YOGA.

Yogacara Buddhism See BUDDHISM.

Young Hegelians See HEGEL.

yü Chinese term meaning 'desire'. One can feel yü toward sex...

yu wu, Chinese terms literally meaning 'having' and 'nothing', respectively; they...

Z See SET THEORY.

Zabarella Jacopo (1532–89), Italian Aristotelian philosopher who taught at the University...

Zarathustra See NIETZSCHE, ZOROASTRIANISM.

ZC See SET THEORY.

Zeigarnik effect the selective recall of uncompleted tasks in comparison to completed...

Zen See BUDDHISM.

Zeno of Citium See STOICISM.

Zeno of Elea See PRE-SOCRATICS.

Zeno’s paradoxes four paradoxes relating to space and motion attributed to Zeno...