hard determinism See FREE WILL PROBLEM.

Hardenberg, Friedrich von See NOVALIS.

hardware See COMPUTER THEORY.

Hare R(ichard) M(ervyn) (b.1919), English philosopher who is one of the...

harmony, preestablished See LEIBNIZ.

harmony of the spheres See PYTHAGORAS.

Hart H(erbert) L(ionel) A(dolphus) (1907–92), English philosopher principally responsible for the...

Hartley David (1705–57), British physician and philosopher. Although the notion of...

Hartmann Eduard von (1842–1906), German philosopher who sought to synthesize the...

hasty generalization, fallacy of See INFORMAL FAL -. LAC.

heap paradox See SORITES PARADOX.

heart See HSIN1.

Heaven See T'IEN.

hedonic calculus See BENTHAM.

hedonism the view that pleasure (including the absence of pain) is...

hedonistic paradox See HEDONISM.

Hegel Georg Wilhelm Friedrich (1770–1831), one of the most influential and...

Hegelians, Young See HEGEL.

Hegesias See CYRENAICS.

Heidegger Martin (1889–1976), German philosopher whose early works contributed to phenomenology...

Heidelberg School See NEO-KANTIANISM.

Heisenberg indeterminacy principle See QUANTUM. MECHANIC.

Heisenberg uncertainty principle See QUANTUM. MECHANIC. Hellenistic philosophy, the philosophical systems of the...

Helmholtz Hermann von (1821–94), German physiologist and physicist known for groundbreaking...

Helvétius Claude Adrien (1715–71), French philosopher prominent in the formative phases...

Hempel Carl G(ustav) (1905–97), eminent philosopher of science associated with the...

Hempel-Oppenheim model See COVERING LAW. MODE.

Henkin semantics See SECOND-ORDER LOGIC.

henotheism allegiance to one supreme deity while conceding existence to others;...

Hentisberi, Hentisberus See HEYTESBURY.