Leonardo da Vinci did not take received wisdom - whether from ancient classical thinkers or medieval scholars or from the Bible - without questioning it. And this was the beginning of the scientific method. This is another lesson for our time: that when we have evidence that contradicts a certain belief, we should be willing to change it. I think this made Leonardo, in some ways, a person who better understood the beauty of God's creation than a person who just takes all received wisdom from the Bible on faith.
Walter IsaacsonThere are parts of his life and personality that are extremely messy, and that's the truth
Walter IsaacsonThe best and most innovative products don't always win...(it's an) aesthetic flaw in how the universe worked
Walter IsaacsonIt's about doing something larger than yourself. It's about serving this world, helping others.
Walter Isaacson