"Oh! Speculators on things, boast not of..." - Quote by Leonardo Da Vinci
Oh! Speculators on things, boast not of knowing the things that nature ordinarily brings about; but rejoice if you know the end of those things which you yourself device.
More by Leonardo Da Vinci
“Practice should always be based upon a sound knowledge of theory.”
“Patience serves as a protection against wrongs as clothes do against cold. For if you put on more clothes as the cold increases, it will have no power to hurt you. So in like manner you must grow in patience when you meet with great wrongs, and they will then be powerless to vex your mind.”
“All our knowledge is the offspring of our perceptions.”