Everything is Dual; everything has poles; everything has its pair of opposites; like and unlike are the same; opposites are identical in nature, but different in degree; extremes meet; all truths are but half-truths; all paradoxes may be reconciled.

All things have poles and pairs of opposites; differences are of degree and not of kind. Heat and cold, light and shadow, love and hate are variations along a single scale. By shifting degree, the quality is altered; by holding both poles, the paradox resolves. Polarity is the principle of contrast and the key to balance. It instructs the mind to seek the scale rather than the conflict, to see the shared substance beneath apparent division. In geometry, polarity is seen where a form can be reversed yet remain the same, where inversion reveals the same law in opposite motion. The extremes are not enemies but limits; the art is to move between them with knowledge.