Everybody should do in their lifetime two things One is to consider death, to observe skulls and skelletons and to wonder what it would be like to go to sleep and never wake up, never, that is the most it is a very gloomy view of contemplation, it is like manure, just as manure fertilises the plant and so on so the contemplation of death and the acceptance of death is very highly generative of the creation of life , and the other thing to contemplate is to follow the possibility of the idea that you are totally selfish