A sane mind should not be guilty of a logical fallacy, yet there are very fine minds incapable of following mathematical demonstrations.

It is harder to fool the conscience than the mind. The conscience is capable of fighting long and hard against the mind deluded by its love of sin.

Mind is tricky. If I say this is very difficult, the mind says, “This is so difficult it is beyond you.” If I say this is very simple, the mind says, “This is so simple that only fools can believe in it.” And mind goes on rationalizing things, always escaping from doing.

There is no fool like an educated fool...

I Have often thought if the minds of men were laid open, we should see but little difference between that of the wise man and that of the fool. There are infinite reveries, numberless extravagances, and a perpetual train of vanities which pass through both. The great difference is, that the first knows how to pick and cull his thoughts for conversation, by suppressing some, and communicating others; whereas the other lets them all indifferently fly out in words.

I can dispel the clouds, drain the sea, or cure someone hopelessly ill. But to change the mind of a fool is beyond me.

A fool with the mind of a detective is an intelligent fool, a logical fool, the worst kind, because men's logic, far from compensating for their foolishness, only duplicates it, triplicates it, makes it dangerous.

God save me from fools with a little philosophy — no one is more difficult to reach.

In the course of your life you will be continually encountering fools. There are simply too many to avoid.

We can classify people as fools by the following rubric: when it comes to practical life, what should matter is getting long term results, and getting the work done in as efficient and creative a manner as possible.

That should be the supreme value that guides people’s action. But fools carry with them a different scale of values.

They place more importance on short-term matters – grabbing immediate money, getting attention from the public or media, and looking good. They are ruled by their ego and insecurities.

They tend to enjoy drama and political intrigue for their own sake. When they criticize, they always emphasize matters that are irrelevant to the overall picture or argument.

They are more interested in their career and position than in the truth. You can distinguish them by how little they get done, or by how hard they make it for others to get results.

They lack a certain common sense, getting worked up about things that are not really important while ignoring problems that will spell doom in the long term.

The natural tendency with fools is to lower yourself to their level.

They annoy you, get under your skin, and draw you into a battle.

In the process, you feel petty and confused. You lose a sense of what is really important.

You can’t win an argument or get them to see your side or change their behavior, because rationality and results don’t matter to them.

You simply waste valuable time and emotional energy.

In dealing with fools you must adopt the following philosophy: they are simply a part of life, like rocks or furniture.

All of us have foolish sides, moments in which we lose our heads and think more of our ego or short-term goals.

It is human nature. Seeing this foolishness within you, you can then accept it in others.

This will allow you to smile at their antics, to tolerate their presence as you would a silly child, and to av

For him who has conquered the mind, the mind is the best of friends; but for one who has failed to do so, his mind will remain the greatest enemy.

Misfortunes cannot suffice to make a fool into an intelligent man.

Who would set a limit to the mind? Who would dare assert that we know all there is to be known?

Generally among intelligent people are found nothing but paralytics and among men of action nothing but fools.

Fine minds are seldom fine souls.