It is just another cautious (or friendly) way to say that you are atheist. Exactly like the terms: agnosticism, free thinker, apatheism and, sometimes, secularism.. etc. All agnostics, free thinkers and apatheists turn unmasked atheists when talking to other atheists in the absence of theists. But just when they speak to their societies they become free thinkers and secularists again.
* Illusion is a big world ... and the world is a bigger illusion.
* Try to live happy ... try to make others live happy.
* Try to live happy ... try to make others live happy.