Every system that we build will surprise us with new kinds of flaws until those machines become clever enough to conceal their faults from us. - Marvin Minsky

Theorems often tell us complex truths about the simple things, but only rarely tell us simple truths about the complex ones. To believe otherwise is wishful thinking or "mathematics envy."

Most adults have some childlike fascination for making and arranging larger structures out of smaller ones.

A memory should induce a state through which we see current reality as an instance of the remembered event — or equivalently, see the past as an instance of the present. ...the system can perform a computation analogous to one from the memorable past, but sensitive to present goals and circumstances.