I am speaking now of the highest duty we owe our friends, the noblest, the most sacred — that of keeping their own nobleness, goodness, pure and incorrupt. … If we let our friend become cold and selfish and exacting without a remonstrance, we are no true lover, no true friend.

Harriet Beecher Stowe (1811-1896) American author

Little Foxes, ch. 3 (1865)