But man is the most complete phenomenon of will, and, as we explained in the Second Book, he had to be enlightened with so high a degree of knowledge in order to maintain himself in existence, that in it a perfectly adequate copy or repetition of the nature of the world under the form of the idea became possible: this is the comprehension of the Ideas, the pure mirror of the world, as we learnt in the Third Book.
Baina gizakia da nahimenaren agerpen perfektuena, zeinak irauteko, bigarren liburuan erakutsi denez, ezagutzaren hain gradu garaiak argiturik egon behar baitu, non horretan munduaren esentziaren errepikapen guztiz egokia errepresentazioaren formapean ahalgarri bihurtu baitzen, zeina ideien kontzepzioa, munduaren ispilu garbia baita, hirugarren liburuan aditzera eman dugunez.