“Earn wealth through honest and truthful work.”

2010s, 2018, A note to readers (2018)
Context: I believe that the pursuit of truth and right ideas through honest debate and rigorous argument is a noble undertaking. I am grateful to have played a small role in the conversations that have helped guide this extraordinary nation’s destiny.
I leave this life with no regrets. It was a wonderful life — full and complete with the great loves and great endeavors that make it worth living. I am sad to leave, but I leave with the knowledge that I lived the life that I intended.

First annual message to Congress (1 June 1841).

I'm Tired (February 19, 2009)

Epistulae Morales ad Lucilium (Moral Letters to Lucilius), Letter LXII

The Irrational Knot, Preface (1905)
1900s

Source: Europe and the People Without History, 1982, Chapter 3, Modes of Production, p. 78.

Nahj al-Balagha

Source: Friday

In an interview to the World Association of Newspapers for World Press Freedom Day (3 May 2004)
Context: It's an amazing thing to think that ours is the first generation in history that really can end extreme poverty, the kind that means a child dies for lack of food in its belly. That should be seen as the most incredible, historic opportunity but instead it's become a millstone around our necks. We let our own pathetic excuses about how it's "difficult" justify our own inaction. Be honest. We have the science, the technology, and the wealth. What we don't have is the will, and that's not a reason that history will accept.