"The highest compact we can make with our fellow is, — Let there be truth between us two forevermore. * * * It is sublime to feel and say of another, I need never meet, or speak, or write to him; we need not reinforce ourselves or send tokens of remembrance; I rely on him as on myself; if he did thus or thus, I know it was right."
January 1, 1970
https://en.wikiquote.org/wiki/Friendship