Yes, Malleus was written by a clergyman, and yes, it did contain a papal bull acknowledging the existence of witchcraft. However, the papal bull was only tenuously connected with the book itself (the bull preceded the book by 2 years), the letter of approval that was included is of questionable authenticity, and there are claims that the books was condemned by the Church some time after. My point is that the medieval Church did not carry out any sort of blood thirsty witch hunt as is so often claimed. Individual clergy may have been caught up in the commotion of local witch hunts, but the Church itself was not nearly as zealous as most people believe. The original statement in question ("The church once taught that left-handed people were witches and... were burned to death...") is a gross over simplification and arguably completely false. To then take this claim and use it to support the "born this way" argument is absurd.