The Ari overflowed with Torah. He was expert in Scripture, Mishnah, Talmud, Midrash, Maaseh Bereishit and Maaseh Merkavah. About all the different levels of prophecy, their details and from which level the prophets had their revelations. He understood the whistling of the trees, the grass and stones, the language of the birds and other animals, the conversations of angels, the flicking of a candle. He could read lines on the hand or faces in the manner outlined in the Zohar (2:74b). He could discern all that any individual had done, and could see what they would do in the future. He could read a person's thoughts, even before the thought entered his mind. He saw future events and knew about all happening here or decreed in heaven.
He understood the mysteries of reincarnation, who had been born before or incarnated for the first time. He could talk to the soul of a person in front of him; know of his previous incarnations, what he did from the day he was born until now and what his present Tikun is. He could tell anyone about his sins in his previous life and why he came back in this present life. He could look at someone and let him know how he was connected to higher spiritual levels and what is his original root in Adam Harishon.