Scientific thought, then, is not momentary; it is not a static instance; it is a process.

It was while teaching philosophy that I saw how easily one can say ... what one wants to say. ... In fact, I became particularly aware if the dangers of speculation ... It's so much easier than digging out the facts. You sit in your office and build a system. But with my training in biology, I felt this kind of undertaking precarious.

Are we forming children who are only capable of learning what is already known? Or should we try to develop creative and innovative minds, capable of discovery from the preschool age on, throughout life?

Logical positivists have never taken psychology into account in their epistemology, but they affirm that logical beings and mathematical beings are nothing but linguistic structures.

Experience precedes understanding.

This means that no single logic is strong enough to support the total construction of human knowledge.

Knowing reality means constructing systems of transformations that correspond, more or less adequately, to reality.