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[40] Eudoxus, a philosopher holding the doctrine afterwards

adopted by Epicurus respecting pleasure, but (as Aristotle

testifies in the Tenth Book) of irreproachable character.

[41] See the Rhetoric, Book I. chap ix.

[42] The unseen is at least as real as the seen.

[43] The terms are borrowed from the Seventh Book and are here

used in their strict philosophical meaning. The [Greek: enkrates]

is he who has bad or unruly appetites, but whose reason is strong

enough to keep them under. The [Greek: akrates] is he whose

appetites constantly prevail over his reason and previous good

resolutions.

By the law of habits the former is constantly approximating to a

state in which the appetites are wholly quelled. This state is

called [Greek: sophrosyne], and the man in it [Greek: sophron].

By the same law the remonstrances of reason in the latter grow

fainter and fainter till they are silenced for ever. This state

is called [Greek: akolasia], and the man in it [Greek:

akolastos].