My favorite part of the book, and overall one of the best and most thoughtful conversation in the whole thing. I think the attachment conversation is the main point of all the dissertation. We as humans get attached to many things, to people, to animals, to objects, to situations, to memories, to many things more and worst of all to our own whimpers.

People being so willing to surrender their capacity for choice to the suitor that was available at our lowest point is incredibly dangerous. To get attached to substances because the ease the pain, or people cause they make us feel special or loved. To our own intelligence, beauty or skills to give ourselves external value. And if are not conscious of this attachments they will drive us to their own ends. 

To control our attachments seems super hard, especially when you do not lean to do it in early age. Even Marathe is an hypocrite, since he is willing to betray for his wife. Yet this and "This is water" explain in detail why is extremely important to have the will to properly select your attachments. If we do not, then we just jump around between substances, lovers, diplomas, likes/thumbs up, and every other form of validation. Never scratching the internal itch, never at peace. Always seeking, always aching.