Whether we love humanity or not, we must realize that we are part of it. My future depends entirely on the future of humanity, and so I am compelled to take care of humanity. That is why being compassionate is actually in my own best interest. And a symptom of my own peace of mind is that I can share comfort with others around me.
If the genius of invention were to reveal to-morrow the secret of immortality, of eternal beauty and youth, for which all humanity is aching, the same inexorable agents which prevent a mass from changing suddenly its velocity would likewise resist the force of the new knowledge until time gradually modifies human thought.
Forgiveness is the most effective way of dealing with arguments; altruism and forgiveness bring humanity together so that no conflict, however serious, will go beyond the bounds of what is truly human.
I have never been any place where I was not first invited. And upon invitation, if I feel that there is potential for making some contribution to humanity, I will comply in spite of being tired.