I've read the books and watched the movies, and The Hiding Place is the most memorable to me, and her words have helped me to learn about forgiveness.
She forgave those who tortured her and killed her sister, and then went to prisons all over the world to preach the message of our Jesus Christ.
"Even as the angry vengeful thoughts boiled through me, I saw the sin of them. Jesus Christ had died for this man; was I going to ask for more? Lord Jesus, I prayed, forgive me and help me to forgive him....Jesus, I cannot forgive him. Give me your forgiveness....And so I discovered that it is not on our forgiveness any more than on our goodness that the world's healing hinges, but on His. When He tells us to love our enemies, He gives along with the command, the love itself."
― Corrie Ten Boom, The Hiding Place