Winston Churchill:

• "Success is not final, failure is not fatal: It is the courage to continue that counts."

Maya Angelou:

• "You may encounter many defeats, but you must not be defeated. In fact, it may be necessary to encounter the defeats, so you can know who you are, what you can rise from, how you can still come out of it."

Nelson Mandela:

• "The greatest glory in living lies not in never falling, but in rising every time we fall."

Helen Keller:

• "Character cannot be developed in ease and quiet. Only through experience of trial and suffering can the soul be strengthened, ambition inspired, and success achieved."

Malala Yousafzai:

• "When the whole world is silent, even one voice becomes powerful."

Steve Jobs:

• "I'm convinced that about half of what separates the successful entrepreneurs from the non-successful ones is pure perseverance."

Oprah Winfrey:

• "Challenges are gifts that force us to search for a new center of gravity. Don't fight them. Just find a new way to stand."

Nick Vujicic:

• "I was never crippled until I lost hope."

J.K. Rowling:

• "Rock bottom became the solid foundation on which I rebuilt my life."

Martin Luther King Jr.:

• "The ultimate measure of a man is not where he stands in moments of comfort and convenience, but where he stands at times of challenge and controversy."

Ellen DeGeneres:

• "Follow your passion. Stay true to yourself. Never follow someone else's path unless you’re in the woods and you’re lost and you see a path. By all means, you should follow that."

Muhammad Ali:

• "I hated every minute of training, but I said, 'Don't quit. Suffer now and live the rest of your life as a champion.'"

Aung San Suu Kyi:

• "You should never let your fears prevent you from doing what you know is right."

Serena Williams:

• "You have to believe in yourself when no one else does."

Barack Obama:

• "The future rewards those who press on. I don't have time to feel sorry for myself. I don't have time to complain. I'm going to press on."