A friend is a beloved mystery; dearest always because he is not ourself, and has something in him which it is impossible for us to fathom. If it were not so, friendship would lose its chief zest.

In this quote, Lucy Larcom reflects on the enigmatic and special nature of friendship, describing a friend as a "beloved mystery." Larcom suggests that what makes friendship so unique and precious is the mystery each person holds—the qualities and experiences that make them distinct from ourselves. This mystery is not something to be solved but rather something to be cherished, as it adds depth and intrigue to the relationship.

Larcom goes on to explain that a friend is dearest because they are not an exact reflection of us. The differences between friends are not only natural but vital to the bond. If friends were exactly like us, with no unique traits or mysteries of their own, the relationship would lose much of its excitement and richness. The zest of friendship, according to Larcom, lies in the fact that our friends offer us perspectives and experiences that are outside of our own, keeping the connection fresh and engaging.

The quote also emphasizes that friendship thrives on mutual respect and admiration for these differences. Rather than seeing the mystery in a friend as something puzzling or distant, Larcom frames it as a source of affection and fascination. It's the uniqueness of the other person that deepens the connection and strengthens the bond of friendship, making it more rewarding and dynamic.

Ultimately, Larcom’s words convey that friendship is enriched by the mystery of the other person—the unknown qualities that keep the relationship intriguing and full of wonder. It’s the very differences that make the friendship more meaningful and enduring, as they offer continuous opportunities for growth, understanding, and shared experiences.