Prabhupada: ...controlling the mind and the senses. So a devotee says that to control the mind and senses, that is also required, but if one has gotten the mercy of Caitanya Mahaprabhu... These senses are like serpents, they are so dangerous. But protkhata-damstrayate: a serpent without poison teeth. Suppose we are sitting here. If you find a serpent here, you'll be all afraid, and the whole meeting will be disturbed: "There is a serpent." But if you know that serpent has no poison teeth, you'll not be disturbed, if his poison teeth is broken. Sometimes for medical purpose the serpent's poison teeth is taken away, to take that, what is called, anti-venom, anti-venom injection they prepare. So serpent is dangerous on account of these poison teeth. So here the devotee says, yes, the senses are serpentlike, dangerous, but by the mercy of Caitanya we can break the poison teeth. How it is that? If you constantly engage your senses for Krsna, oh, the poison teeth is broken. The poison teeth is broken. The most formidable serpent is this tongue. If you simply talk of Krsna and if you simply eat Krsna prasadam, oh, the poisonous effect of tongue will be broken. You'll have no opportunity to talk nonsense or to eat nonsense. Then your life becomes advanced immediately fifty percent(?). If you can control the tongue, then you control all the senses. If you cannot control the tongue, then you cannot control other senses. Therefore it is said, protkhata-damstrayate, the poison teeth is taken away.