He that cannot reason is a fool. He that will not is a bigot. He that dare not is a slave.
Men are apt to mistake the strength of their feeling for the strength of their argument. The heated mind resents the chill touch and relentless scrutiny of logic.
Logic is like the sword - those who appeal to it, shall perish by it.
Most of our so-called reasoning consists in finding arguments for going on believing as we already do.
Common sense, however it tries, cannot avoid being surprised from time to time.
Science is simply common sense at its best, that is, rigidly accurate in observation, and merciless to fallacy in logic.
You cannot approach people who think differently with reason and logic if they don't know what that means. First, you have to appeal to their values to start with. If you attack them, you lose them.
Reason can wrestle and overthrow terror.
Reason: The arithmetic of the emotions.
He is a true fugitive who flies from reason.
A wise man is not governed by others, nor does he try to govern them; he prefers that reason alone prevail.
The last function of reason is to recognize that there are an infinity of things which surpass it.
The fact that logic cannot satisfy us awakens an almost insatiable hunger for the irrational.
Logic is the art of going wrong with confidence.
If you follow reason far enough it always leads to conclusions that are contrary to reason.
Logic: The art of thinking and reasoning in strict accordance with the limitations and incapacities of the human misunderstanding.
From a drop of water a logician could infer the possibility of an Atlantic or a Niagara without having seen or heard of one or the other.
Reason means truth and those who are not governed by it take the chance that someday the sunken fact will rip the bottom out of their boat.
Reason is the shepherd trying to corral life's vast flock of wild irrationalities.
People who lean on logic and philosophy and rational exposition end by starving the best part of the mind.
Logic is one thing and commonsense another.
The vast majority of human beings are not interested in reason or satisfied with what it teaches.
You can only find truth with logic if you have already found truth without it.
Logic is a large drawer, containing some useful instruments, and many more that are superfluous. A wise man will look into it for two purposes, to avail himself of those instruments that are really useful, and to admire the ingenuity with which those that are not so, are assorted and arranged.
Logic takes care of itself; all we have to do is to look and see how it does it.
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