Thought is an operation of the intellect. The intellect is: that faculty of the human soul or mind by which it receives or compre hends the ideas communicated to it by the senses or by perception, or other means, as distinguished from the power to feel and to will; the power or faculty to perceive objects in their relations; the power to judge and comprehend also the capacity for higher forms of knowledge as distinguished from the power to perceive and imagine. When we say what we think, we mean that we exercise the faculties whereby we compare and contrast certain things with other things, observing and noting their points of difference and agreement, then classifying them in accordance with these observed agreements and differences. In thinking we tend to classify the multitude of impressions received from the outside world.