The human mind is indeed a cave swarming with strange forms of life, most of them unconscious and unilluminated. Unless we can understand something as to how the motives that issue from this obscurity are generated, we can hardly hope to foresee or control them.

Summary

This quote emphasizes the complexity of the human mind and the existence of subconscious thoughts and motives that influence our actions. It suggests that to have any chance of understanding and controlling our behavior, we must gain insight into the underlying forces that arise from the unconscious mind. Without such understanding, our ability to predict and manage our own actions becomes limited. In essence, the quote highlights the need for self-awareness and introspection in order to navigate the depths of our own minds.