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Success is different for everyone. For some it's quantifiable, while for others it's about what you've done to help change the world and how well you've served other people in the process. Whatever your definition, however, the success of the following high-profile women is pretty hard to deny — and they've had plenty to say about it.

These words on female ambition, following your passion and dreams, and what success means in today's world are as inspirational as you'd expect. From the incomparable Oprah Winfrey to Gloria Steinem and Anna Wintour, keep reading for some of the best career advice we could ask for.