“In this city 300 languages are spoken and the people that speak them live side by side in harmony.
This city typifies what I believe is the future of the human race and a future where we grow together and we share and we learn from each other.”

Source: The Notebook

Nobel lecture (1989)
Context: Because we all share this small planet earth, we have to learn to live in harmony and peace with each other and with nature. That is not just a dream, but a necessity. We are dependent on each other in so many ways, that we can no longer live in isolated communities and ignore what is happening outside those communities, and we must share the good fortune that we enjoy.

My bright idea: Civilisation is still worth striving for

The Value of Science (1955)
Context: We are at the very beginning of time for the human race. It is not unreasonable that we grapple with problems. But there are tens of thousands of years in the future. Our responsibility is to do what we can, learn what we can, improve the solutions, and pass them on.
... It is our responsibility to leave the people of the future a free hand. In the impetuous youth of humanity, we can make grave errors that can stunt our growth for a long time. This we will do if we say we have the answers now, so young and ignorant as we are. If we suppress all discussion, all criticism, proclaiming "This is the answer, my friends; man is saved!" we will doom humanity for a long time to the chains of authority, confined to the limits of our present imagination. It has been done so many times before.
... It is our responsibility as scientists, knowing the great progress which comes from a satisfactory philosophy of ignorance, the great progress which is the fruit of freedom of thought, to proclaim the value of this freedom; to teach how doubt is not to be feared but welcomed and discussed; and to demand this freedom as our duty to all coming generations.

Variant: To live only for some future goal is shallow. It's the sides of the mountain that sustain life, not the top.
Source: Zen and the Art of Motorcycle Maintenance (1974), Ch. 17
Context: Mountains should be climbed with as little effort as possible and without desire. The reality of your own nature should determine the speed. If you become restless, speed up. If you become winded, slow down. You climb the mountain in an equilibrium between restlessness and exhaustion. Then, when you are no longer thinking ahead, each footstep isn't just a means to an an end but a unique event in itself. This leaf has jagged edges. This rock looks loose. From this place the snow is less visible, even though closer. These are things you should notice anyway. To live only for some future goal is shallow. It’s the sides of the mountain that sustain life, not the top. Here's where things grow. <!-- p. 205

Choruses from The Rock (1934)

NAPF convention, 17 December 2005

On the Paris Agreement, as quoted in " Factbox: World reacts to new climate accord http://www.reuters.com/article/us-climatechange-summit-reaction-factbox-idUSKBN0TV0Q420151213", Reuters (12 December 2015)

Speech at the last meeting of the Greater London Council (27 March 1986); quoted in "GLC : The Inside Story" (1999) by Wes Whitehouse, p. 174.