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.

We are forever asking Nature whether it has stopped beating its wife.

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.

Mathematics is not yet capable of coping with the naïveté of the mathematician himself.

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.

We are caught up in a paradox, one which might be called the paradox of conceptualization. The proper concepts are needed to formulate a good theory, but we need a good theory to arrive at the proper concepts.

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.