You should be really unmoved.

Between humans and animals, they just want to live. This is the goal of all purposes.

What human beings praise and encourage is just to maximize their own interests and drive their bodies.

Don't complain, don't despair, the world is like this.

For example, some of our secular ideas exist in each of us. When we decide to violate them and not abide by them, some of them can achieve our goals, but the corresponding ones also pay the corresponding price, that is, they are criticized by morality.

Another example is that we are born with a fear of heights, so we don't want to go to dangerous heights. If we want to violate it, we will greatly increase our risk of death.

Of course, most of the non-human laws cannot be achieved (birth, old age, sickness and death, various known physical laws).

And most of the laws cannot be summarized. I also thought that like Aristotle, people can find out all the laws governing the universe by relying on pure thinking: it is unnecessary to test them with observation. But now it seems different

It seems that love is simple. I currently divide it into three types,

One is the love you need, which is lacking in physiology or psychology. The other party can give you, so you love.  

The second is the love of bosom friends, empathy for emotions and others.

The third is social love, ethical love. Generally speaking, it is cooking together.

Either of the above is selfish.