The quote from Arturo Pérez-Reverte's "The Flanders Panel" suggests that friendships are not merely a result of personal choice but are determined by mutual selection. It implies that friendships develop based on the acceptance of one another, highlighting the importance of openness and vulnerability in forming meaningful connections. The act of either rejecting or accepting people into our lives reflects our willingness to embrace relationships with all their complexities.

This perspective emphasizes the idea that friendships can often be serendipitous. Instead of seeking out friendships, we find that certain individuals resonate with us, and it's up to us to either welcome them into our lives or turn them away. This acceptance can lead to profound bonds and shared experiences that enrich our lives, while rejection may limit our connections to others.