Saw an article about this.  Here are some of my favorites:

“It is impossible to live without failing at something, unless you live so cautiously that you might as well not have lived at all – in which case, you fail by default.” — J.K. Rowling

“Disappointment and uncertainty are constant companions in life’s pursuits. Being a little frightened is natural and unavoidable.” — Sonia Sotomayor

“Life is not easy for any of us. But what of that? We must have perseverance and above all confidence in ourselves. We must believe that we are gifted for something, and that this thing, at whatever cost, must be attained.” — Marie Curie

“Of course I am not worried about intimidating men. The type of man who will be intimidated by me is exactly the type of man I have no interest in.”―Chimamanda Ngozi Adichie

“Life shrinks or expands according to one’s courage.” — Anais Nin

“It took me quite a long time to develop a voice, and now that I have it, I am not going to be silent.” —Madeleine Albright

“A woman with a voice is, by definition, a strong woman.” —Melinda Gates

“The most common way people give up their power is by thinking they don’t have any.” — Alice Walker

“In every position that I have been in, there have been naysayers who don’t believe I’m qualified or don’t believe I can do the work. And I feel a special responsibility to prove them wrong.” — Sonia Sotomayor