Considering the human condition, and the frailties we all possess, this is truly extraordinary. Yet he knew that the future of what so many had fought and died for would be compromised. His sacrifice and vision are truly approaching immortality in this regard. America was not just creating a republic and democracy for itself, but also for the world's stage. An arguably ubiquitous desire and yet often noted failure of humanity is the concept of self-sacrifice.
Human beings are fragile creatures easily succumbing to fear and desperation.
It is easiest to rely on our most primitive mannerism in order to survive. A caveman mentality of brute force and self-interest at the expense of others is common in times of crisis. Essentially this selfish, self-motivated behavior is shunned by almost all cultures. Probably the leading downfall of any society or civilization is individuals failing to work together or observe the position of their fellow humans - thus anarchy. We cherish the leaders who possess the true character of sacrifice to inspire and guide us.