We do not learn by inference and deduction and the application of mathematics to philosophy, but by direct intercourse and sympathy.

A president can ask for reconciliation in the racial conflict that divides Americans. But reconciliation comes only from the hearts of people.

Certainly in the next 50 years we shall see a woman president, perhaps sooner than you think. A woman can and should be able to do any political job that a man can do.

You must pursue this investigation of Watergate even if it leads to the president. I'm innocent. You've got to believe I'm innocent. If you don't, take my job.

For centuries, America has led the world on a long march toward freedom and democracy. Let's reclaim our clean energy leadership and lead the world toward clean energy independence.

I think it's quite unlikely that I'll be the leader of the Green party going into a future election if it's on anything like a four-year timing.

Leadership is about having the courage to go against the advice of the so-called experts and doing what your instinct tells you is right.

Leaders have to consider whether they have the right diverse perspectives at the table.