If this tragedy prompts reflection and debate, as it should, let's make sure it's worthy of those we have lost. - Barack Obama

The truth is, I’ve never been a big believer in destiny. I worry that it encourages resignation in the down-and-out and complacency among the powerful. I suspect that God’s plan, whatever it is, works on a scale too large to admit our mortal tribulations; that in a single lifetime, accidents and happenstance determine more than we care to admit; and that the best we can do is to try to align ourselves with what we feel is right and construct some meaning out of our confusion, and with grace and nerve play at each moment the hand that we’re dealt.

Our first and immutable commitment must be to the security of Israel, our only true ally in the Middle East and the only democracy,

That is our generation’s task -- to make these words, these rights, these values of life and liberty and the pursuit of happiness real for every American. Being true to our founding documents does not require us to agree on every contour of life. It does not mean we all define liberty in exactly the same way or follow the same precise path to happiness. Progress does not compel us to settle centuries-long debates about the role of government for all time, but it does require us to act in our time. For now decisions are upon us and we cannot afford delay. We cannot mistake absolutism for principle, or substitute spectacle for politics, or treat name-calling as reasoned debate. We must act, knowing that our work will be imperfect. We must act, knowing that today’s victories will be only partial and that it will be up to those who stand here in four years and 40 years and 400 years hence to advance the timeless spirit once conferred to us in a spare Philadelphia hall.