I am referencing the entire website and his book.
I base my opinion partially on having had a discussion with this NASA climatologist .
On July 18, 2013 before U.S. Senator Barbara Boxer's Environment and Public Works committee, Spencer suggested the hearing title could easily be renamed "Climate Change, It's Happened Before" rather than the actual title, "Climate Change, It's Happening Now". He added “The last 2000 years of proxy reconstructed temperature variations for the Northern Hemisphere shows that the Modern Warm Period (today) is not significantly different from the Medieval Warm Period of ~1000 years ago, or the Roman Warm Period of ~2000 years ago."