Move beyond the limited parameters that most human beings have and realize that there are thousands and millions of worlds beyond this world.
In our efforts to get human beings empirically into focus in ethics, we have a standing obligation not only to revisit and, if necessary, rework our conception of human importance, but also to ensure that our best conception is indeed the lens through which we look at our fellow human beings.
In many cases, it's a choice. There are many, many human beings through history - millions and millions and millions - who have been both homosexual at times in their lives and then heterosexual, or vice-versa, or bisexual. How can it be a biological imperative if people can change?
Land mines, torture equipment, cluster bombs, chemical weapons are weapons designed to inflict pain and death on human beings. Most victims are civilians, women and children. How can arms manufacturers, weapons designers, plant managers, politicians, who have families of their own whom they love, be so insensitive when it comes to the suffering of other human beings?
Hundreds of millions of human beings on our planet increasingly suffer from unemployment, poverty, hunger, and the destruction of their families.
I must confess that I am deeply troubled. I fear that human beings are intent upon acting out a vast deathwish and that it lies with us now to make every effort to promote resistance to the insanity and brutality of policies which encompass the extermination of hundreds of millions of human beings.
It's stupid to claim that one human being is special, or picked out by God, when in fact there are hundreds of millions of human beings in the world, and God knows how many millions of people long dead who have been lost to history, all of whom were probably special to someone.
There are millions and millions of people who are thrown in the midst of poverty and starvation. Animals don't die of starvation, only human beings.
We don't realize how much racism has tainted our self-image as human beings.
The belief that the animals exist because God created them - and that he created them so we can better meet our needs - is contrary to our scientific understanding of evolution and, of course, to the fossil record, which shows the existence of non-human primates and other animals millions of years before there were any human beings at all.
The more we realize our minuteness and our impotence in the face of cosmic forces, the more amazing becomes what human beings have achieved.
Hundreds, thousands, aye, millions of human beings, men, women and children, wander the streets of our cities and the highways of our country, hungry, ragged and cold, vainly seeking in this land of plenty, where physical want should be unknown.
Basically we are all the same human beings with the same potential to be a good human being or a bad human being. The important thing is to realize the positive side and try to increase that; realize the negative side and try to reduce. That's the way.
No matter what part of the world we come from, we are all basically the same human beings. We all seek happiness and try to avoid suffering. We have the same basic human needs and concerns. All of us human beings want freedom and the right to determine our own destiny as individuals and as peoples. That is human nature.
It is critical to realize that underlying the extermination of nature is the marginalization of human beings. If we are to save what is wild, what is irreparable and majestic in nature, then we will ironically have to turn to each other and take care of all the human beings here on Earth. There is no boundary that will protect an environment from a suffering humanity.
We will never know everything. But I think if we can learn within the next few decades to face the danger we all are in, I believe there will be tens of millions, maybe hundreds of millions, of human beings working wherever they are to do something good.