Habermas Juergen; hacker; hacker ethic; haecceity; halting problem; Hamiltonian cycle; Hamiltonian path; Hamiltonian problem; Hamiltonian tour; Hamilton's problem; Hamilton William; Hampshire Stuart; Happiness; Haraway Donna Jeanne; Harding Sandra; Hare Richard Mervyn; Hart Herbert Lionel Adolphus; Hartley David; Hartmann Nicolai; Hayek Friedrich August von; Hebbian; hedon; hedonism; hedonistic; Hegel Georg Wilhelm Friedrich; Hegelianism; Heidegger Martin; Heisenberg Werner; Held Virginia Potter; Helvaetius Claude-Adrien; Hempel Carl Gustav; henotheism; Heraclitus; Herbert of Cherbury Baron; heredity; hermeneutics; heterogeneous; heterological paradox; heteronomy; heuristic; hex; hexadecimal; hierarchy; higher-order function; higher-order logic; higher-order predicate logic; high-level language; Hilbert David; Hilbert's program; Hippias; historical determinism; historicism; Hoagland Sarah Lucia; Hobbes Thomas; Hofstadter Douglas; holism; homogeneous; homogenous; homological - heterological; homomorphism; homonymous - synonymous - paronymous; Hopfield model; Hopfield network; Hopper Grace; Horkheimer Max; Horn clause; Horney Karen; Human-Computer Interaction; Human-Computer Interface; humanism; human rights; Hume David; Hume's argument against causation; Husserl Edmund Gustav Albrech; Hutcheson Francis; hyle; hylomorphic; Hypatia; hypercube; hypermedia; hypertext; hypostasization; hypothesis; hypothetical deductive method; hypothetical imperative; hypothetical syllogism - HS;