Penelope Cruz claims she has found the secret to eternal youth - education. The 32-year-old actress is passionate about reading and learning and has mastered a number of languages, including her native Spanish, English, French and Italian. And she is determined to keep improving herself and stay young in the process. She says, "I like to set myself challenges. When I'm not shooting, I like to do courses. I like to keep studying, to feel like a student again. That makes me happy. It keeps you young forever if you always want to learn. I like to read things that help me spiritually and I don't have only one religion."