"Credo" is a philosophical book, the author of which is the late leader of the national movement and fighter for human rights, Nelson Mandela. In this work, he shares his deep thoughts about life, peace, freedom and justice. The autobiographical nature of correspondence from the time of imprisonment under the apartheid regime on Robben Island helps readers understand not only the author's personality, but also critically rethink their own views on life. "Credo" is a book that inspires, encourages and provides new discoveries in the field of inner freedom and inner peace.