“Wealth is the ability to fully experience life”

“Wealth is the ability to fully experience life” is a very popular quotation on Twitter. The quotation has been credited to American author Henry David Thoreau (1817-1862) since 2005, but there is no evidence that Thoreau ever said it.
   
“My money helps me to enjoy and fully experience life” was cited in print in 1990.
 
   
Wikiquote: Henry David Thoreau
Henry David Thoreau (12 July 1817 – 6 May 1862) was an American writer and philosopher; born David Henry Thoreau.
(...)
Misattributed
Wealth is the ability to fully experience life.
. No known citation.
 
Google Books
Out of Your Mind
By Dr. Virginia Foster and Rev. Arthur Hammons
Gretna, LA: Wellness Institute, Inc.
2000 (originally published 1990)
Pg. 115:
MY MONEY HELPS ME TO ENJOY AND FULLY EXPERIENCE LIFE.
 
Google Books
Positive Pursuit:
Principles for Personal and Spiritual Success
By Keith Brant
Victoria, BC: Trafford
2005
Pg. 161:
Wealth is the ability to fully experience life.
Henry David Thoreau
 
English 180—Canadian Literature
Lauren Transit says:
05/04/2005 at 7:54 pm
(...)
As Henry David Thoreau said:
“Wealth is the ability to fully experience life.”
 
Google Books
Your Daily Walk with the Great Minds:
Wisdom and Enlightenment of the Past and Present
By Richard A. Singer, Jr. 
Ann Arbor, MI: Loving Healing Press
2007
Pg. 147:
“Wealth is the ability to fully experience life.” —Henry David Thoreau