Thinking is the hardest work there is, which is the probable reason why so few engage in it.
What It Means
This is a placeholder explanation generated by the low-overhead model. It interprets "Thinking is the hardest work there is, which is the probable reason why so few engage in it." in the context of "As quoted in "My Philosophy of Industry" an interview of Ford by Fay Leone Faurote, The Forum, Vol. 79, No. 4 (April 1928), p. 481; also in "Thinking Is Hardest Work, Therefore Few Engage in It", San Francisco Chronicle (13 April 1928), p. 25; both articles are cited as the primary sources of other variants which later arose, in "Thinking Is the Hardest Work There Is, which Is the Probable Reason Why So Few Engage In It" in Quote Investigator (April 5, 2016)" to mean that wisdom is timeless.
About Henry Ford