This dude looks like a God. Ciro Santilli does not understand his stuff, but just based on the names of his theories, e.g. "Yoga of anabelian algebraic geometry", and on his eccentric lifestyle, it is obvious that he was in fact a God.
Articles by others on the same topic
Alexander Grothendieck (1928–2014) was a highly influential French mathematician, renowned for his groundbreaking work in algebraic geometry, homological algebra, and number theory. He is often considered one of the most important mathematicians of the 20th century. Grothendieck's contributions include the development of a new way of thinking about algebraic geometry through the use of schemes, a concept that generalized classical algebraic varieties.