you need some understanding of mathematical systems. a system is defined as an operations boundary. the operations boundary contains statements as facts and rules/operations on these statements. a statement of fact is one that you may take as TRUE. so what is a true statement? if you are making your own knowledge system your True statements may come from your experience, education, beliefs, or supertstitions. whatever, after you have got your true statements you need to figure out your rules of work on these statements by which you can derive further statements which you never experienced or thought but since they are a result of your TRUE statements you may believe them: these are you theorems...