There are branches of learning and education which we must study merely with a view to leisure spent in intellectual activity, and these are to be valued for their own sake; whereas those kinds of knowledge which are useful in business are to be deemed necessary, and exist for the sake of other things.
We have also arranged things so that almost no one understands science and technology. This is a prescription for disaster. We might get away with it for a while, but sooner or later this combustible mixture of ignorance and power is going to blow up in our faces.
It is in fact a part of the function of education to help us escape, not from our own time - for we are bound by that - but from the intellectual and emotional limitations of our time.
A little learning is a dangerous thing; drink of it deeply, or taste it not, for shallow thoughts intoxicate the brain, and drinking deeply sobers us again.