Fifty Days of Solitude (1994) by Doris Grumbach (link)

This book was a beautiful look into a person’s soul and what makes them the way they are. In addition to Grumbach’s own thoughts on solitude, and the multifaceted forms they take, the inclusions of others’ interpretation of what solitude is, and isn’t, brought more depth and meaning to her words. Thoughts on friendship, community, the purpose of life, and what really matters on an essential level are themes found throughout this book.