“Optimism and love are the antidote to life.” This sentence is a very popular healing saying in the circle of friends.

As for who said this sentence or where it came from, I checked and there is a view that it is a famous saying by Japanese writer Natsume Soseki, but I did not find the detailed source. Perhaps this is also a way of pretending to be a famous person, just like "Lu Xun said it".