All our knowledge has its origins in Posted on June 8, 2011June 8, 2006 by admin “All our knowledge has its origins in our perceptions.” — Leonardo da Vinci Author: Leonardo da Vinci Category: knowledge Tags: knowledge, Leonardo da Vinci Spread the love Related posts: Where there is shouting, there is no In complete darkness, it is only knowledge It takes a couple of years just But although all our knowledge begins with