Jeffrey Sachs, in his first Reiths Lecture cites John F Kennedy:

Our problems are man-made, therefore they can be solved by man, and man can be as big as he wants. No problem of human destiny is beyond human beings. Man’s reason and spirit have often solved the seemingly unsolvable, and we believe they can do it again. I am not referring to the absolute infinite concept of universal peace and goodwill of which some fantasies and fanatics dream. I do not deny the value of hopes and dreams, but we merely invite discouragement and incredulity by making that our only and immediate goal.

Let us focus instead on a more practical, more attainable peace, based not on a sudden revolution in human nature but on a gradual evolution in human institutions, on a series of concrete actions and effective agreements which are in the interest of all concerned. There is no single simple key to this peace, no grand or magic formula to be adopted by one or two powers. Genuine peace must be the product of many nations, the sum of many acts. It must be dynamic, not static, changing to meet the challenge of each new generation, for peace is a process, a way of solving problems.

The highlighted text describes the velorution. The cartoon above, by Osvaldo Cavandoli who died last month, highlights one of the non-solutions that the Chinese are (temporarily, we hope) pursuing.