Did the iconic people throughout our history know they would someday acheive greatness?

Question

Do you know if people like Thomas Edison, Issac Newton, Leonardo DiVinci, Mozart, etc. had premonitions of making a huge impact on Earth before they actually did anything?

Answer 1

Generally speaking, the greats never expect to be be great. All those people you named are influential figures across the world. Leonardo DiVinci and Mozart were both mentally insane and I strongly doubt that they excepted their efforts to impact the world throughout the future. However, I believe that their strive to acheive excellence made a greater impact after they died and their efforts should never go ignored.