Life is Struggle Everything in the world is a constant struggle, "struggle" in the things of competition in natural selection among organisms. Animals and plants are struggle for their existence. Nature provides them with weapons for that struggle. LIons have claws, fishes have scales, rose have thorns. They use their weapons for the avoinable war of existence. Nature also orders us to struggle; When we obey the nature, we win our existence. The result of struggle is the of a better society. In order to surpass others, one has to devote himeself to what he dose. If every individual does so, the society will make progress.