In literate cultures especially, doctrines in more or less systematic propositional form may result from reflection on what was initially cast in narrative form; alternatively or in addition, these doctrines may be derived at least partly from more general philosophical sources. The content of these beliefs or doctrines varies greatly from one religion to another, ranging, for example, from the doctrine of the Trinity in Christianity to the teachings of Hinduism about the continuous cycle of death and rebirth to which every creature is subject, from the 99 names for the one God in Islam to Buddha's teaching of the Four Noble Truths about the nature of suffering, the cause of suffering, the possibility of a cessation of suffering, and the way that leads to this outcome. In some religions such as Hinduism, Buddhism, Judaism, Christianity and Islam, there are scriptures in which religious narratives and/or doctrines are recorded.