The quote reflects on the relationship between the vastness of the ocean and the inner stability that one can find within themselves. It suggests that just as the ocean is encircled by a green, nurturing environment, each person has their own inner island of peace and joy that is often obscured by life's challenges. This comparison highlights the rare and precious nature of inner tranquility amidst the chaos of existence.

The speaker emphasizes the importance of maintaining this connection to one's inner self, warning against the dangers of straying too far from it. Leaving this metaphorical island could lead to a permanent loss of that inner peace, underscoring the theme of self-preservation and the pursuit of spiritual fulfillment in Melville's work. The message conveys hope and a reminder to cherish and protect one's inner joy amidst life's turmoil.