About his major claim to fame was the line "nattering nabobs of negativism" which was actually written by William Safire. Safire was an incredibly intelligent person who had a horrible sense of ethics (working for Nixon.)
I just read this (unknown to me) piece in Wikipedia: https://en.wikipedia.org/wiki/William_Safire#The_%22Safire_Memo%22
The "Safire Memo"
Safire drafted a never-delivered speech titled "In Event of Moon Disaster", for President Nixon to deliver on television in the event the Apollo 11 astronauts were stranded on the Moon.[11] According to the plans, Mission Control would "close down communications" with the LEM and a clergyman would have commended their souls to "the deepest of the deep" in a public ritual likened to burial at sea. Presidential telephone calls to the astronauts' wives were also planned. The speech originated in a memo from Safire to Nixon's chief of staff H. R. Haldeman, whence the name "Safire Memo", suggesting a protocol the administration might follow in reaction to such a disaster.[12][13] The last line of the draft speech was an allusion to Rupert Brooke's First World War poem "The Soldier".[13] In a 2013 piece for Foreign Policy magazine, Joshua Keating included the speech as one of six entries in a list of "The Greatest Doomsday Speeches Never Made".[14]