Experience is of particulars only.

The price of training is always a certain trained incapacity: the more we know how to do something, the harder it is to learn to do it differently.

There is nothing more inspiring than having a mind unfold before you. Let people teach who have a calling. It is never just a job.

A problem is something you can do something about. If you can't do something about it, then it's not a problem, it's a predicament. That means it's something that must be coped with, endured.

Give a small boy a hammer and he will find that everything he encounters needs pounding.

In addition to the social pressures from the scientific community there is also at work a very human trait of individual scientist. I call it the law of the instrument , and it may be formulated as follows: Give a small boy a hammer, and he will find that everything he encounters needs pounding. It comes as no particular surprise to discover that a scientist formulates problems in a way which requires for their solution just those techniques in which he himself is especially skilled.

A philosophy which speaks, even indirectly, only to philosophers is no philosophy at all; and I think the same is true if it speaks only to scientists, or only to jurists, or priests, or any other special class.