Very smart people tend to be weird since they insist on thinking everything through for themselves.

People calculate too much and think too little.

People overvalue their knowledge and underestimate the probability of their being wrong.

"Intelligent and educated people are less likely to learn from their mistakes, for instance, or take advice from others. And when they do err, they are better able to build elaborate arguments to justify their reasoning, meaning that they become more and more dogmatic in their views. Worst still, they appear to have a bigger "bias blind spot," meaning they are less able to recognize the holes in their logic."

Anyone who has a two hundred-plus IQ runs the risk of just hanging out because you get too involved in your own thoughts and you just want to sit there and think about .

Here’s what I found out: We overthink, overplan, and overanalyze our careers, our businesses, and our lives; that long hours are neither virtuous nor healthy; and that we usually succeed in spite of most of what we do, not because of it.

The person who reads too much and uses his brain too little will fall into lazy habits of thinking..

There’s a word for “people who are in their heads too much”: thinkers.

If a person studies too much and exhausts his reflective powers, he will be confused, and will not be able to apprehend even that which had been within the power of his apprehension. For the powers of the body are all alike in this respect.

Because most people are intimidated by math and can’t independently critique it, they overvalue opinions backed with math/pseudoscience.

A veces, evaluar demasiados detalles puede hacer que nos sintamos sobrecargados o abrumados.

When you overthink at the wrong moment, you cut yourself off from the wisdom of your emotions, which are much better at assessing actual preferences. You lose the ability to know what you really want. And then you choose the worst strawberry jam.

This is the case with many learned persons; they have read themselves stupid.

Don't think too much. That makes you believe you have more choices than you do. Then you mind becomes confused.