Each individual is responsible for creating his own world by bringing what is inside of him to the perception of what is outside of him, and then determining his relationship to those perceptions for good or ill. Finding the bridge between the inner world of a thinker and the outer world of perception is the key to philosophy and the science of knowing. Perception gives us a chance to “know” something about the world and our relationship to it. But the real question is: What cans the observer know?