concepts quotes

In American math classes, we teach a lot of concepts poorly over many years. In the Asian systems they teach you very few concepts very well over a few years.

It is always good to know which ideas cannot be checked directly, but it is not necessary to remove them all. It is not true that we can pursue science completely by using only those concepts which are directly subject to experiment.

Over the years, there have been a series of concepts developed to justify the use of force in international affairs for a long period. It was possible to justify it on the pretext, which usually turned out to have very little substance, that the U.S. was defending itself against the communist menace. By the 1980s, that was wearing pretty thin.

Intuition and concepts constitute… the elements of all our knowledge, so that neither concepts without an intuition in some way corresponding to them, nor intuition without concepts, can yield knowledge.

Thoughts without content are empty, intuitions without concepts are blind.