Fumitaka Sato, a leading astrophysicist and esteemed professor at Kyoto University, made significant contributions to cosmology but tragically passed away last autumn. His vast collection of books, which includes numerous scientific enlightenment texts he authored, is now being preserved in university and hometown libraries. This 'map of knowledge' reflects not only his academic work but also serves as a testament to his lifelong passion for learning and sharing knowledge with others.

Sato's achievements in astrophysics are notable, particularly his groundbreaking work on black holes, including the discovery of the 'Tomimatsu-Sato solution' and his coinage of the phrase 'clearing of the universe.' His prolific reading and writing, as recounted by his son, Riro Sato, were sources of inspiration for his intellectual pursuits. With an estimated over 10,000 books in his possession during his lifetime, Sato considered his collection as a comforting garment that supported his professional life.

However, following his retirement from Konan University in 2014, he faced the difficult decision of discarding many of his books and materials. In an era increasingly dominated by digital resources, the fate of physical books often raises concern, making this preservation effort even more significant. The collections retained now offer future scholars insights into the vast knowledge and intellectual pursuits of a notable mind in the field of astrophysics, honoring his legacy.