Retracing your steps can help you remember what you were looking for.  Your memory of a thought is married to the place in which it first occurred to you.

Jennifer Ackerman, The Genius of Birds

If I calculate the average annual quota required to limit global warming to two degrees this century I find that simply maintaining a typical American single-family home exceeds it in two weeks. Absent any indication of direct harm, what makes intuitive moral sense is to live the life I was given, be a good citizen, be kind to the people near me, and conserve as well as I reasonably can.... [Climate change] deeply confuses the human brain, which evolved to focus on the present, not the far future, and on readily perceivable movements, not slow and probabilistic developments.

Jonathan Franzen, "Carbon Capture: Has climate change made it harder for people to care about conservation?" in the New Yorker of April 6, 2015