Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Ludwig Schläfli was a Swiss geometer and complex analyst who was one of the key figures in developing the notion of higher dimensional spaces. The concept of multidimensionality has since come to play a pivotal role in physics, and is a common element in science fiction. Although his ideas have become so widely accepted, he is poorly remembered, even among mathematicians. Ludwig Schläfli spent most of his life in Switzerland. He was born in Graßwil, his mother's hometown.