The quote "What the eye doesn't see and the mind doesn't know, doesn't exist" from D.H. Lawrence's "Lady Chatterley's Lover" suggests that perception shapes our reality. If something remains unseen or unknown to us, it loses its significance and becomes irrelevant in our lives. This reflects the idea that awareness and knowledge are crucial in acknowledging the existence of things around us.

In the context of the novel, this theme resonates with the characters' experiences and relationships. The quote highlights the limitations of human perception and understanding, emphasizing that our lived reality is often filtered through our senses and thoughts. Thus, what remains outside our awareness is as if it does not exist at all.