"you can't learn maths on your own, you need a master" My math teacher during my second year in university, who also happened to be a chaos theorist working on

"you can't learn maths on your own, you need a master" My math teacher during my second year in university, who also happened to be a chaos theorist working on cool stuff such as cryptography via chaos synchronization. He was by far the worst teacher I ever had in terms of mental calculation abilities, but he was also the more advanced. I remember a conversation where he explained how he would always implement his algorithms at least twice, on entirely different software and hardware stacks.