What are the identity and differentiations between Ionic, Doric and Corinthian pillars?

William Preston introduced the three primary Greek orders of architecture—the Ionic, Doric, and Corinthian—into the Masonic lecture system as symbolic representations of Wisdom, Strength, and Beauty, associating them with the three original Grand Masters 1. Together, these pillars represent the supports of a lodge, corresponding symbolically to its principal officers: Wisdom to contrive (Ionic, represented by the Master), Strength to support (Doric, represented by the Senior Warden), and Beauty to adorn (Corinthian, represented by the Junior Warden) 1.

Architecturally and symbolically, the three pillars are differentiated by their proportions, ornamentation, and underlying design 2:

The Doric order represents Strength 1. It is plain, natural, and the most ancient of the Greek orders 2. Standing eight diameters high with minimal ornamentation beyond its mouldings and frieze triglyphs, it was designed after the model of a strong, robust man, making its solid composition suitable where strength and noble simplicity are required 2.

The Ionic order represents Wisdom 1. It occupies a middle proportion between the solid and delicate orders, standing nine diameters high 2. Adorned at the capital with volutes and on the cornice with denticles, its design was formed after the model of an agreeable young woman of elegant shape, displaying both delicacy and ingenuity 2.

The Corinthian order represents Beauty 1. Considered the richest of the orders, it stands ten diameters high 2. Invented at Corinth by Callimachus, its capital is elaborately decorated with two rows of leaves and eight volutes sustaining the abacus 2.

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