I usually say the aim of life is to be happy. Our existence is based on hope. Our life is rooted in the opportunity to be happy, not necessarily wealthy, but happy within our own minds. If we only indulge in sensory pleasure, we'll be little different from animals. In fact, we have this marvellous brain and intelligence; we must learn to use it.
Religion is still useful among the herd - that it helps their orderly conduct as nothing else could. The crude human animal is in-eradicably superstitious, and there is every biological reason why they should be. Take away his Christian god and saints, and he will worship something else.
The harmony of a concert, to which you listen with delight, must have on certain classes of minute animals the effect of terrible thunder; perhaps it kills them.
The fish in the water is silent, the animals on the earth is noisy, the bird in the air is singing. But man has in him the silence of the sea, the noise of the earth and the music of the air.
If chimpanzees have consciousness, if they are capable of abstractions, do they not have what until now has been described as 'human rights'? How smart does a chimp have to be before killing him constitutes murder?
The similarities among animals that are on the surface very different are no coincidence. In fact, animal locomotion is no different than other flows, animate and inanimate they all develop in space and in time such that they optimize the flow of material.
Just give food without showing affection, [animals] might not get sort of 100% satisfaction. So they also, you see, when we human beings, we show affection, the poor animal also respond to us.
How can you say you're trying to spiritually evolve, without even a thought about what happens to the animals whose lives are sacrificed in the name of gluttony?