In a time of turbulence and change, it is more true than ever that knowledge is power.

My fellow Americans, ask not what your country can do for you, ask what you can do for your country.

In a world of danger and trial, peace is our deepest aspiration.

What really counts is not the immediate act of courage or of valor, but those who bear the struggle day in and day out - not the sunshine patriots but those who are willing to stand for a long period of time.

I do not speak for my church on public matters; and the church does not speak for me.

A life of complete leisure is the hardest work of all.

But Goethe tells us in his greatest poem that Faust lost the liberty of his soul when he said to the passing moment: "Stay, thou art so fair." And our liberty, too, is endangered if we pause for the passing moment, if we rest on our achievements, if we resist the pace of progress. Change is the law of life. And those who look only to the past are certain to miss the future.