In Lawrence Durrell's book Justine, the quote "man is only an extension of the spirit of place" suggests that human beings are deeply influenced and shaped by their environment and surroundings. It emphasizes the connection between a person and the space they inhabit, implying that place and atmosphere play a vital role in forming one’s identity and behavior.

This idea highlights how our environment can reflect and influence our inner lives, making us essentially an extension of the spirit and energy of the place. Durrell's words underline the significance of location and setting in understanding human nature and the human experience.