Of all the ways we have found to hurt ourselves, the worse has been through love. We are always suffering because of someone who doesn't love us, or someone who has left us, or someone who won't leave us. If we are alone, it is because no one wants us.
Yes, I was a fool, but I was in love, and though I was suffering the greatest misery I had ever known I would not have had it otherwise for all the riches of Barsoom. Such is love, and such are lovers wherever love is known.
...morally speaking, there is no limit to the concern one must feel for the suffering of human beings, that indifference to evil is worse than evil itself, that in a free society, some are guilty, but all are responsible.