This engraving is from the 1640 edition of Francis Bacon's book "The Advancement of Learning." The soul sails the seas of life; beyond the pillars lies illumination. The motto on the pillars, "Moniti Meliora," (let us, being admonished, follow better things) proclaims the aims of the Rosicrucian Great Restoration: a spiritual communion which results in "a philanthropy of the soul."
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SirBacon.org - Sir Francis Bacon's New Advancement of Learning