卐𓆝 𓆟 𓆞r̾eⷲsͣe̾aͭrͥcⷦhͣ
The Tetra of the Tetractys The Greek word tetractys comes from tetra which means four. In the first four numbers Pythagoreans contain all the numbers, because 1+2+3+4=10 and all other numbers are copies of the first ten numbers. #tetractys
