What Is Secularism?

How would you explain to a martian from mars what secularism is? Think te sou got simple languages, time, and the fact that these concepts are related to other concepts. And we can't say just before, just if i give youa bit of time. Sometimes i've been told a thman by well dilly, you can't ask such questions and expect such a quick answer. But i do believe it is from the prophetic tradition that when the circumstance dictates and requires, you need to use simple language.