Courage is not the absence of fear; it is the making of action in spite of fear.
— M. Scott Peck

Whether you think you can, or you think you can’t – you’re right.
― Henry Ford

Take a big step.
You can’t cross a chasm in two small jumps.
— David Lloyd George

Do not be too timid and squeamish about your actions. All life is an experiment. The more experiments you make the better. What if they are a little coarse and you may get your coat soiled or torn? What if you do fail, and get fairly rolled in the dirt once or twice? Up again, you shall never be so afraid of a tumble.
― Emerson

Those who are crazy enough to think they can change the world usually do.
— Steve Jobs

Never limit yourself because of others’ limited imagination; never limit others because of your own limited imagination.
— Mae Jemison

Let me tell you something you already know. The world ain’t all sunshine and rainbows. It’s a very mean and nasty place, and I don’t care how tough you are, it will beat you to your knees and keep you there permanently if you let it. You, me, or nobody is gonna hit as hard as life. But it ain’t about how hard you hit. It’s about how hard you can get hit and keep moving forward; how much you can take and keep moving forward. That’s how winning is done! Now if you know what you’re worth, then go out and get what you’re worth, but you gotta be willing to take the hits, and not pointing fingers saying you ain’t where you wanna be because of him, or her, or anybody. Cowards do that and that ain’t you. You’re better than that!
— Rocky Balboa

It is by suffering ills that the mind learns defiance of suffering.
— Seneca