"Human subtlety...will never devise an invention more beautiful, more simple or more direct than does nature, because in her inventions nothing is lacking, and nothing is superfluous." ~ Richter II, The Notebooks of Leonardo Da Vinci, Vol. 2. p. 126 no. 837.
"I have been impressed with the urgency of doing. Knowing is not enough; we must apply. Being willing is not enough; we must do." ~ Leonardo da Vinci
"It had long since come to my attention that people of accomplishment rarely sat back and let things happen to them. They went out and happened to things." ~ Leonardo da Vinci
"As a well-spent day brings happy sleep, so a life well spent brings happy death." ~ Leonardo da Vinci