nub, gist, genesis, essence, nutshell, moot, gravamen, fulcrum, microcosm, upshot, red herring, revolve around, facet, stems, paradox, linchpin, philosophical, focal point, conundrum, subtext, dichotomy, intractability, common denominator, contradiction, touchstone, cui bono, premise, fallacy, per se, semantics, corollary, oversimplification, irreconcilability, indeterminacy, quantity theory, paramount, leitmotif, particulars, underpinning, centerpiece, hinges, syllogism, issue, main, centering, rationale, why, germaine, aspect, pragmatics, duality, locus classicus, interrelationship, theodicy, antithesis, sophoclean, answer, presupposition, reasoning, crossroads, dilemma, lynchpin, quandary, part, inconclusiveness, perplexes, stumbling block, truth, evitable, sine qua non, factuality, problem, cornerstones, saving grace, incommensurability, speciousness, counterargument, manifestation, nexus, disjunction, synecdoche, reductio ad absurdum, narrative, centrality, peculiarity, embroils, ironies, typicality, question, simple, circularity, interrelatedness, implication, dialectic, arguers, flashpoint, disjuncture, bewitchment, leitmotiv, res ipsa loquitur, merits, rehash, cornerstone, desideratum, aporia, antinomy, pitfall, riddle, difficulty, point, ques, lesson, precondition, quandaries, tricky, next, bracketed, cadential, pertinent, relevant, relevent, resolvable, ticklish, trickiest, 100th, arching, bottom, calculated, chordal, christological, chronological, circle, climactic

alpha and omega

constellation, point

crux australis, crux of the matter, southern cross