To many, religion and philosophy are one and the same. To many, religion and philosophy are entirely opposite to each other and mutually exclusive. To many, religion and philosophy are interrelated. Actually, all of them are partly right and partly wrong. Religion is a set of principles, morals, ethics, and rules set up to lead one's life. Philosophy is a discipline which deals with life, metaphysics, knowledge, and the ultimate truth. Both religion and philosophy have their own similarities and differences.
One of the major similarities between religion and philosophy is that they both deal with human life, human mind, its existence in the universe, the meaning of life, the ultimate truth, and so on. Both tend to make existence in this universe a lot less complicated by addressing issues such as knowledge, truth, life, and existentialism. Thus, one can always argue that both religion and philosophy are one and the same and we just call them by different names. But it is not entirely true.
One of the major differences between religion and philosophy is the need for rituals. While almost all the religions in the world have certain set of rituals which are to be followed by the followers of the respective religions, philosophy does not have any sort of rituals, as it is only a way of thinking. So, while a person can be philosophical without having to do any sort of practices or rituals, it is almost impossible for him to be religious without doing any sort of rituals or practices stated in that particular religion. This is one big difference which makes people say that religion and philosophy are mutually exclusive and cannot co-exist.
Yet another difference between religion and philosophy is the concept of belief. While almost all the philosophies do not accept the concept of belief, religion tends to bring in the belief angle quite a few times. In philosophy, something is considered true only if it is completely proven true on a long term basis by means of various forms of reasoning. If it is not, then it will not be considered the ultimate truth. However, in case of religion, a lot of things are supernatural, superstitious, and incredulous in nature that only the concept of belief can make people stand by those things. This is the reason why a lot of philosophers were against organized religions. However, there were a few exceptions where philosophers were religious in nature and stated that religious practices actually have hidden meanings and can help people understand the ultimate truth in life. This is especially common with some of the philosophers from the east.
So, there are a few similarities and differences between religion and philosophy. One needs to look beyond the surface meaning of both religion and philosophy to understand what they actually imply and how it is useful for one's life.