“I feel guilty for being a member of the human race.”

Source: The Captain is Out to Lunch and the Sailors Have Taken Over the Ship

Maitreya's Teachings - The Laws of Life (2005)

Quoted on Stuff.co.nz (January 14, 2016), "Angelo Mathews promises 'no mercy' to Sri Lanka cricketers guilty of misconduct" http://www.stuff.co.nz/sport/cricket/75876639/Angelo-Mathews-promises-no-mercy-to-Sri-Lanka-cricketers-guilty-of-misconduct
Context: I can't deny or accept that these things happened. But, I can promise that there will be no mercy for any member found guilty of misconduct. As players, we don't play to lose and you get hurt when spectators say things like this. Fans are also hurt when we lose and you have to look at it from both ways. I am not admitting or denying anything. But I have been asked to submit a report which I will do during the next few days.

Conjectures of a Guilty Bystander (1966)
Context: It is a glorious destiny to be a member of the human race, though it is a race dedicated to many absurdities and one which makes many terrible mistakes: yet, with all that, God Himself gloried in becoming a member of the human race. A member of the human race! To think that such a commonplace realization should suddenly seem like news that one holds the winning ticket in a cosmic sweepstake.

"The Reasons for My Involvement in the Peace Movement" (1972) http://www.shalomctr.org/node/61; later included in Moral Grandeur and Spiritual Audacity (1996)
Context: There is immense silent agony in the world, and the task of man is to be a voice for the plundered poor, to prevent the desecration of the soul and the violation of our dream of honesty.
The more deeply immersed I became in the thinking of the prophets, the more powerfully it became clear to me what the lives of the Prophets sought to convey: that 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.

Peter Singer - The Genius of Darwin: The Uncut Interviews - Richard Dawkins https://www.youtube.com/watch?v=GYYNY2oKVWU, 2009.
Source: Practical Ethics
Context: Speciesism is an attitude of prejudice towards beings because they're not members of our species, so just as racism means that you're prejudiced against beings who are not members of your race and sexism means you're prejudiced against people of the other sex. So we humans tend to be speciesist in we think that any being that is a member of the species homo sapien just automatically has a higher moral status and is more important than any being that is a member of any other species, irrespective of the actual characteristics of those beings.

Source: Neveryóna (1983), Chapter 9, “Of Night, Noon, Time, and Transition” (p. 238)