I’ll try to reference as many of the books that I can.

In the future I’ll try to expand this list into individual pages:

• Etty Hillesum “A life interrupted”
• Leo Tolstoy “A confession and other religious stories”
• Matthieu Richard “Happiness”
• Viktor Frankl “Man’s search for meaning”
• Dalai Lama & Desmond Tutu “Book of Joy”
• …