Can we be sure that they are incapable of the feelings or sentiments that are believed to place them on a lower scale than humans? Do we deny sensitivity to all of the so-called lower orders to blunt, protect, and, ultimately, deny our own? We will see that bees can grieve over teh loss of a queen, sound war cries or hum with contentment; they can be angry, docile, ferocious, playful, aggressive, appear happy, or utter pitiful sounds of distress. are these not emotions akin to ours, merely expressed differently?
...observe the difference between your attitude to illusions and mine. You have to defend the religious illusion with all your might. If it becomes discredited - and indeed the threat to it is great enough - then your world collapses. There is nothing left for you but to despair of everything, of civilization and the future of mankind. From that bondage I am, we are, free. Since we are prepared to renounce a good part of our infantile wishes, we can bear it if a few of our expectations turn out to be illusions.