Leaving our descendents with a terrible problem

We are leaving our descendents with a terrible problem for the future -

"Planning should be based on known, absolute and practical limitations, combined with practical and realistic expectations. Fine to aspire to the ultimate luxury of the imagination, but not to nihilistically dismiss the probable or possible consequences as it being somebody else's problem."

http://members.optusnet.com.au/rbsmith3/Planning2060.html