Everything can be taken from a man or a woman but one thing: the last of human freedoms to choose one's attitude in any given set of circumstances, to choose one's own way.
Viktor Frankl, Holocaust survivor
Liberated after three years of life in concentration camps, he wrote his world-famous book Man's Search for Meaning. In this book, he described the life of an ordinary concentration camp inmate from the objective perspective of a psychiatrist. (Viktor Frankl in Wikipedia)