Learn of the skilful; he that teaches himself, has a fool for his master.
We are taxed twice as much by our idleness, three times as much by our pride and four times as much by our foolishness.
No workman without tools,/ Nor Lawyer without Fools,/ Can live by their Rules.
There are no fools so troublesome as those that have wit.
Of learned Fools I have seen ten times ten, Of unlearned wise men I have seen a hundred
The heart of a fool is in his mouth, but the mouth of the wise man is in his heart
Trickery and treachery are the practices of fools that have not the wits enought to be honest
The learned fool writes nonsense in better language that the unlearned - but it's still nonsense.
Wise men talk because they have something to say; fools talk because they have to say something.