and common-sense is the natural corrective of logic-just as when, sailing by right ascension and declination, we see the breakers ahead, we do not hesitate to fall back on the vulgar assistance of the lead.
There is no such thing as pure logic.
We are always guided either by feeling or by feeling-plus-logic; and hence logic, so far from adding certainty to our conclusions, rather, by bringing in a new element, adds a new possibility of error.
The chief use of logic is not to show me what to do, but to afford me a rational excuse for doing what common-sense dictates.
It is not the foundation on which I build my wall, but the prop with which I shore it up when it begins to look shaky.
All the good and all the evil in the world have been caused by feelings, but probably feelings-plus-logic have done more harm in the long run than undiluted feelings.
Logic is relentless.
The logic of Torquemada was unanswerable.
Heretics were damned.
They made converts who were also damned.
It was better to torture and kill a few of them than to consign a large portion of the race to hell forever.
Q. E. D. The argument is unassailable, but if Torquemada had consulted his heart for a moment he would have thrown the whole flimsy sophism overboard.
If I may indulge in a Hibernicism I would say that it is a good thing to keep your heart