Buddhism is the law of nature. What the Buddha perceived and taught is the law of nature.
The Buddha taught many things, but the basic concepts in Buddhism can be summed up by the Four Noble Truths and the Noble Eightfold Path.
Buddha then taught people not to worship him as a god. He said they should take responsibility for their own lives and actions. He taught that the Middle Way was the way to nirvana. The Middle Way meant not leading a life of luxury and indulgence but also not one of too much fasting and hardship. There are eight guides for following the Middle path.