at your elbow.
For the heart is the root of all, and feeling is the mother of logic, though logic often disowns its mother and endeavors to cut loose from her apron strings, ashamed apparently of its low birth.
True logic should be proud of its maternal ancestor, and delight in calling in the good old lady whenever it seems to be coming to grief.
And clearly the idea that logic can independently lay down eternal truths is a fallacy, for the human race is living and growing.
Our viewpoints vary and change from day to day. Our feelings are different from those of our fathers, and the logical structure which we rear upon them merely adds to the confusion.
could not have argued intelligibly together because their rootfeelings were different — they belonged to different epochs.
Axioms alter from age to age, and the Quod erat demonstrandum
of one period is the Reductio ad absurdum
of the next.
And the hard logic of an earlier age often survives into a new generation against whose deepest instincts it offends, and yet we persist in our allegiance to the old truth, become falsehood.
There is therefore a grain of truth in the common saying that a rule of action is correct in theory but not in practice.
Thus the axiom that it is best to hit a man who differs from you over the head has been fossilized and preserved by the logical institutions