If men dread knaves, they also despise fools

From Science Fictions by Stuart Ritchie.  Excellent.  Should be read in its entirety.

Page 47.

Though we may not desire to detect fraud, we must not, on that account, endeavor to be insensible of it … If men dread knaves, they also despise fools.

Norman MacDonald, Maxims and Moral Reflections (1827)