It comes under the great law just stated.

This incapacity of knowing its own traits is often found in the family as well as in the individual.

So never mind what your cousins, brothers, sisters, uncles, aunts, and the rest, say about that fine poem you have written, but send it (postage-paid) to the editors, if there are any, of the "Atlantic,"-- which, by the way, is not so called because it is A NOTION, as some dull wits wish they had said, but are too late.
-- Scientific knowledge, even in the most modest persons, has mingled with it a something which partakes of insolence.

Absolute, peremptory facts are bullies, and those who keep company with them are apt to get a bullying habit of mind;--not of manners, perhaps; they may be soft and smooth, but the smile they carry has a quiet assertion in it, such as the Champion of the Heavy Weights, commonly the best-natured, but not the most diffident of men, wears upon what he very inelegantly calls his "mug." Take the man, for instance, who deals in the mathematical sciences.

There is no elasticity in a mathematical fact; if you bring up against it, it never yields a hair's breadth; everything must go to pieces that comes in collision with it.