"Old age comes on suddenly, and not gradually as is thought." Emily Dickinson
From Neil deGrasse Tyson, shared at Tumblr by Explore, and to be remembered and shared widely.
I think this pairs nicely with something else I saw at Explore, from Sam Harris.
We need systems that are wiser than we are. We need institutions and cultural norms that make us better than we tend to be. It seems to me that the greatest challenge we now face is to build them.