Carl Sagan's reading list: Besides books immediately relevant to Sagan’s work as a scientist and educator in cosmology and astrophysics, he took great care to also touch on history, philosophy, religion, the arts, social science, and psychology. A small but revealing sample, fodder for your own cognitive bookshelf:
One of these letters, written in 1990 and addressed to the president of the Drug Policy Foundation, discussed the possibility of a drug policy debate on American television. The questions Sagan proposes for the segment are just as relevant today as they were when he originally wrote the letter almost 25 years ago.
"The scientific way of thinking is at once imaginative and disciplined. This is central to its success. Science invites us to let the facts in, even when they don’t conform to our preconceptions. It counsels us to carry alternative hypotheses in our heads and see which best fit the facts. It urges on us a delicate balance between no-holds-barred openness to new ideas ..." See: https://www.brainpickings.org/2015/11/09/carl-sagan-science-democracy/