Galileo...on learning

Philosophy is written in that great book which ever lies before our eyes - I mean the universe. But we cannot understand it if we do not first learn the language and grasp the symbols in which it is written. This book is written in the mathematical language, and the symbols are triangles, cicles, and other geometrical figures, without whose help it is impossible to comprehend a single word of it, without which one wanders in vain through a dark labyrinth.

- Il Saggiatore, 1610