Recently, I posted an article about mathematicians. We spoke about the kind of things mathematicians do, I call each type of mathematician as a “flavour”. I did not know where I stood in this classification, since I was clearly a misfit in any of the “flavours” I had mentioned. So, I added one more flavour to suit me — mathematics missionary. This is the type who pretends to know mathematics, just waves his hands and talks endlessly whenever he sermonises on mathematics. You can also call him a mathematics vagabond
To borrow a religious metaphor, he is an evangelist who implores all to follow his GOD, mathematics. Whether you care for what he says, or disagree with him, he does not mind either way.