 There's a great story of Ibn Sina, who he met a man who was he was crying and he was sometimes laughing and he was sometimes what we might call maybe like manic you know just up and down and up and down and just you know sometime to show up and sometime and people didn't know what was wrong with him and so they brought him to Ibn Sina and so he was trying to figure out what was wrong with this man and so he took his pulse to try to figure out what is it that's causing him so much distress and so much anxiety and there's an illness that he talks about in his books and many of the books of that time they talked about something called love sickness and he figured out and he started to narrow down every time he'd say a city a certain city right kept narrowing it down narrowing it down narrowing it down till he figured out what city was causing him the most anxiety and from the people in the city he kept saying all the names of the family the big families of that city all until he figured out which family was causing the most distress and then when he finally got there all the way to the end he realized that his heart this man's heartbeat this technique this man was obsessed by a specific woman and so he realized it was love sickness and he said the way in order to treat this man isn't an isn't a medication I give him it's actually he needs to get married and he beseeched this family on the man's behalf that he married this woman and then the man's symptoms went away this is in his book and the kanun kanun flip or the canon of medicine and he was he said and he says in his book by reaching his beloved I'm amazed how quickly he became re-energized and it's so it's clear to me that human health is obedient and under the control of the mind