As I have grown older I have come to see a similar effect not just in my own life but in the shape of the world around us; humanity has closed the doors to cert

As I have grown older I have come to see a similar effect not just in my own life but in the shape of the world around us; humanity has closed the doors to certain kinds of futures I once hoped and worked for, and "mourning" is a good term for those feelings. There are many open doors remaining in humanity's future, to be sure, but the scope of change seems narrower than it once did, since the bright new possibilities of the future always seem to get swallowed up by the ugly messes left over from the past.