What is the adaptation of two people to one another that constitutes the bond of friendship? What are the elements which make up the character of a perfect friend? (p. 216) Is Kant right about these elements? Does it seem that he’s left out anything important?

What is the adaptation of two people to one another that constitutes the bond of friendship? What are the elements which make up the character of a perfect friend? (p. 216) Is Kant right about these elements? Does it seem that he’s left out anything important?