The point, being indivisible, occupies no space. That which occupies no space is nothing. The limiting surface of one thing is the beginning of anoth… - Leonardo da Vinci

„Wenn auch der menschliche Geist durch vielfache Erfindungen mit verschiedenen Instrumenten auf dasselbe Ziel zugeht, nie wird er eine Erfindung machen, die schöner, leichter und kürzer wäre als die Natur.

You know that in an atmosphere of uniform density the most distant things seen through it, such as the mountains, in consequence of the great quantity of atmosphere which is between your eye and them, will appear blue. Therfore you should make the building... wall which is more distant less defined and bluer. ...five times as far away make five times as blue.

When the thing taken into union is perfectly adapted to that which receives it, the result is delight and pleasure and satisfaction.