demons The term demon is derived from the Greek word daimōn,...

Zohar See CABALA.

Zoroastrianism the national religion of ancient Iran. Zoroastrianism suffered a steep...

Zermelo See QUINE, SET THEORY.

zero-sum game See GAME THEORY.

Zoroaster See ZOROASTRIANISM.

ZF See SET THEORY.

ZFC See INDEPENDENCE RESULTS.

Zeno the Stoic See STOICISM.

Zorn’s lemma See SET THEORY.

Zen See BUDDHISM.

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

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

Zeno of Elea See PRE-SOCRATICS.

yung Chinese term usually translated as 'courage' or 'bravery'. Different forms...

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

Zeno of Citium See STOICISM.

Zarathustra See NIETZSCHE, ZOROASTRIANISM.

Z See SET THEORY.

ZC See SET THEORY.

yang See YIN, YANG.

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

Yoga See SANKHYA-YOGA.

Yi Ching See I-CHING.

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

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

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

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

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

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