Un experto es una persona que ha cometido todos los errores que se pueden cometer en un determinado campo.

An expert is a person who has made all the mistakes that can be made in a very narrow field.

An expert is someone who knows some of the worst mistakes that can be made in his subject, and how to avoid them.

An expert is a person who has made all the mistakes that can be made in a very narrow field.” –Niels Bohr

An expert is a person who has found out by his own painful experience all the mistakes that one can make in a very narrow field.

An expert is someone who doesn't want to learn anything new, because then he would not be an expert

An expert is one who does not have to think. He knows.

Expertise is simply the wisdom that emerges from cellular error. Mistakes aren't things to be discouraged. On the contrary, they should be cultivated and carefully investigated.

An expert is an ordinary man away from home giving advice. — OSCAR WILDE

The expert at anything was once a beginner.

Now I'm a scientific expert; that means I know nothing about absolutely everything.

Every expert was once a beginner.

All other men are specialists, but his specialism is omniscience.

It has been said that a specialist is a barbarian whose ignorance is not well-rounded