Very often the unbeliever is an unbeliever because of his own vanity, though this is not always so. He says that only simple people believe in God; he sees that there are millions of simple souls who worship God and yet it does not raise them higher, so he sees no virtue in the worship of God. Others believe in the God ideal so long as they are happy, but when their condition changes and when sorrow and trouble come, they begin to doubt whether there really is a God.