In order to think, one must have something to think about – one can not think about nothing. That something to think about is reality. We do not live in a void; we live on earth in the real world. In order to survive, we must get a grip on reality.
It is our five senses that provide us with the raw data. Our ability to think allows us to integrate that data, draw logical conclusions, resolve contradictions – to reason. And reason tells us that we must act in order to survive – act to create and maintain those values that support man’s life on earth.