“Moving forward will not be for the faint of heart. But if the next century witnesses failure, let it be because our science is not yet up to the job, not because we don't have the courage to make less random the sometimes most unfair courses of human evolution.”

Presidential campaign (April 12, 2015 – 2016), Speech in (August 25, 2016)
Context: For all Americans. Because I believe we are stronger together. It’s a vision for the future rooted in our values and reflected in a rising generation of young people who are the most open, diverse, and connected we’ve ever seen.... Let’s keep moving forward together. Let’s stand up against prejudice and paranoia. Let’s prove once again, that America is great because is America is good.

The Five People You Meet in Heaven (2003)

1960s, Address to AFL–CIO (1961)
Context: We want to rely upon the goodwill of those who oppose us. Indeed, we have brought forward the method of nonviolence to give an example of unilateral goodwill in an effort to evoke it in those who have not yet felt it in their hearts. But we know that if we are not simultaneously organizing our strength we will have no means to move forward. If we do not advance, the crushing burden of centuries of neglect and economic deprivation will destroy our will, our spirits and our hope. In this way, labor's historic tradition of moving forward to create vital people as consumers and citizens has become our own tradition, and for the same reasons.

2010s, 2015, Presidential Bid Announcement (June 16, 2015)

What I've Learned: James Watson (2007)

Page 68.
The Road to Mecca (1954)

1860s, Fourth of July Address to Congress (1861)
Context: As a private citizen the Executive could not have consented that these institutions shall perish; much less could he in betrayal of so vast and so sacred a trust as these free people had confided to him. He felt that he had no moral right to shrink, nor even to count the chances of his own life in what might follow. In full view of his great responsibility he has so far done what he has deemed his duty. You will now, according to your own judgment, perform yours. He sincerely hopes that your views and your action may so accord with his as to assure all faithful citizens who have been disturbed in their rights of a certain and speedy restoration to them under the Constitution and the laws. And having thus chosen our course, without guile and with pure purpose, let us renew our trust in God and go forward without fear and with manly hearts.

Interview in Writers at Work (1988)