“Paul Kurtz, the author of Humanist Manifesto 2000, declares, “The underlying ethical principle of Planetary Humanism is the need to respect the dignity and worth of all persons in the world community.” Murray, Abdu H.. Grand Central Question
BTW NOTE: The Christian critique of humanism is not whether it has ethics, but what rational basis can it provide for ethics once it determines that the universe as no Designer or purpose.
A Pilgrim's Theology 