...We now know the basic rules governing the universe, together with the gravitational interrelationships of its gross components, as shown in the theory of relativity worked out between 1905 and 1916. We also know the basic rules governing the subatomic particles and their interrelationships, since these are very neatly described by the quantum theory worked out between 1900 and 1930. What's more, we have found that the galaxies and clusters of galaxies are the basic units of the physical universe, as discovered between 1920 and 1930....The young specialist in English Lit, having quoted me, went on to lecture me severely on the fact that in every century people have thought they understood the universe at last, and in every century they were proved to be wrong. It follows that the one thing we can say about our modern 'knowledge' is that it is wrong...My answer to him was, when people thought the Earth was flat, they were wrong. When people thought the Earth was spherical they were wrong. But if you think that thinking the Earth is spherical is just as wrong as thinking the Earth is flat, then your view is wronger than both of them put together.The basic trouble, you see, is that people think that 'right' and 'wrong' are absolute; that everything that isn't perfectly and completely right is totally and equally wrong.However, I don't think that's so. It seems to me that right and wrong are fuzzy concepts, and I will devote this essay to an explanation of why I think so.When my friend the English literature expert tells me that in every century scientists think they have worked out the universe and are always wrong, what I want to know is how wrong are they? Are they always wrong to the same degree?

An expert is one who knows more and more about less and less until he knows absolutely everything about nothing.

Don't do anything stupid.Don't worry, I whispered over the line, I'm an expert on stupid.You're...Like, I can spot stupidity, because I know it so well. The way an exterminator knows bugs really well, and can spot where they've been? I'm like that. A stupidinator.Never say that word again, Prof said.

Philosophers are people who know less and less about more and more, until they know nothing about everything. Scientists are people who know more and more about less and less, until they know everything about nothing.

Unsettling are the days in which everyone is an expert.

One, who has passed through one pain, gets the strength to pass through many pains. Then he becomes the expert in passing through the pains.

By the time you become an expert at marriage, it is too late to start a new one.

You need to determine the field of your gift and enter into the realm of experts for that calling

We need to apply the rules of 10,000 hours in order to achieve the level of a skill commensurate with the status of a world-class expert

We need to practice for 10000 hours

You are learning to be an expert.

You are learner. With diligent practice, you will be an expert.

Woe to you experts in the law, because you have taken away the key to knowledge. You yourselves have not entered, and you have hindered those who were entering.Luke 11:52

If the world should blow itself up, the last audible voice would be that of an expert saying it can't be done.

Even when the experts all agree, they may well be mistaken.

In the beginner's mind there are many possibilities; in the expert's mind there are few.

You'll always find some Eskimos ready to instruct the Congolese on how to cope with heatwaves.

If an expert says it can't be done, get another expert.

Always listen to experts. They'll tell you what can't be done, and why. Then do it.

An expert is a man who knows more and more about less and less until he knows absolutely everything about nothing.