“But we do have control over how we respond to the world. We do have control over how we treat one another.”
2016, Memorial Service for Fallen Dallas Police Officers (July 2016)
Context: For all of us, life presents challenges and suffering -- accidents, illnesses, the loss of loved ones. There are times when we are overwhelmed by sudden calamity, natural or manmade. All of us, we make mistakes. And at times we are lost. And as we get older, we learn we don’t always have control of things -- not even a President does. But we do have control over how we respond to the world. We do have control over how we treat one another.
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Barack Obama 1158
44th President of the United States of America 1961Related quotes

“When we depress, we believe we are the victims of a feeling over which we have no control.”
[p.70]
Choice Theory (1997)

David Packard in: Rushworth M. Kidder (1987), An Agenda for the 21st Century, p. 132

2010s, 2016, June, Speech about the Orlando Shooting (June 13, 2016)

Source: Earthsea Books, The Farthest Shore (1972), Chapter 4, "Magelight" (Ged)

“We may not be able to stop evil in the world, but how we treat one another is entirely up to us.”
2011, Tucson Memorial Address (January 2011)
Context: We may not be able to stop all evil in the world, but I know that how we treat one another is entirely up to us. I believe that for all our imperfections, we are full of decency and goodness, and that the forces that divide us are not as strong as those that unite us.
Context: I believe we can be better. Those who died here, those who saved lives here — they help me believe. We may not be able to stop all evil in the world, but I know that how we treat one another is entirely up to us. I believe that for all our imperfections, we are full of decency and goodness, and that the forces that divide us are not as strong as those that unite us.

A Philosophy of Life (Lecture 35)
1930s, "New Introductory Lectures on Psycho-analysis" https://books.google.com/books/about/New_Introductory_Lectures_on_Psycho_anal.html?id=hIqaep1qKRYC&printsec=frontcover&source=kp_read_button#v=onepage&q&f=false (1933)