​Pythagoras' theorem is the first thing that comes to our mind when Pythagoras is mentioned. However, although this theorem is very important and represents one of the fundamental principles of geometry, Pythagoras' significance is far greater. Despite the great importance of Pythagoras, there is little reliable data about his life. Over time, stories about Pythagoras got elements of a myth and it is hard to decide what are the real historical facts. 

​The people of Dogon can be classified into the most interesting nations on the planet. This ethnic group of approximately 300,000 people lives in the African state of Mali and until the 1930s lived almost completely unknown to the rest of world. Getting acquainted with the modern world has not thrilled them a lot, they are completely indifferent towards technology, but they have a very interesting culture with rich mythology and life philosophy that is transmitted verbally. Dogon people live from soil and their religion is animist with dances under masks, although many in the 20th century accepted Islam.

Have you ever considered where the center of the world is? The ancient Greeks had no doubts because, for them, the center of the world was Apollo's Sanctuary in Delphi. There was located a special stone called omphalos - navel of the world. According to myth, Zeus released two eagles to fly from different directions, from east and west, and they met at the site of Delphi. Thus, Zeus decided that Delphi is the center of the world and omphalos was set on the exact spot where eagles met.