And that hit warneth alle and somme
Of everiche of hir aventures
[By avisiouns], or by figures,
But that our flesh ne hath no might
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To understonden hit aright,
For hit is warned to derkly;—
But why the cause is, noght wot I.
[Wel worthe], of this thing, grete clerkes,
That trete of this and other werkes;