Cunning leads to knavery. It is but a step from one to the other, and that very slippery. Only lying makes the difference; add that to cunning, and it is knavery.
From high Meonia's rocky shores I came, Of poor decsent, Acoetes is my name, My sire was measly born: no oxen ploughed, His fruitful fields, nor in his pastures lowed, His whole estate within the waters lay' With lines and hooks he caught the finny prey; His art was all his livelehood, which he Thus with his dying lips bequeathed to me: In streams, my boy, and rivers take thy chance; There swims', said he, Thy whole inheritance.