A fool may eek a wys man ofte gyde.
91. [A whetston] is no kerving instrument,
And yet it maketh sharpe kerving-tolis.
And ther thow woost that I have ought miswent,
Eschewe thou that, for swich thing to thee scole is;
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Thus ofte wyse men ben war by folis.
If thou do so, thy wit is wel biwared;
By his contrarie is every thing declared.
[92]. For how might ever sweetnesse have be knowe