Passage 1

I am well aware of the challenges that we face．We will be up against those challenges：climate change and hunger，extreme poverty and nuclear proliferation．But I am absolutely convinced that we are up to the task．There is no problem we face here in America or around the world that will not yield to human effort，to cooperation．Our challenges are ones that summon the best of us，and we will make the world better tomorrow than it is today．//
    We know that there is much yet ahead that none of us can predict．But I have every confidence that you will not only succeed by the dint of your own hard work and effort，but you will also contribute far beyond your own personal needs．This is your moment．Go out and give us a future worthy of this great university，of this great city，of this great country，and of the world we all wish to create together．