If my mind can conceive it, My heart can believe it, I know I can achieve it!

Reason can only be stretched so far, but faith has no limits. The only limit to your realization of tomorrow is the doubt to which you hold fast today.

I made a conscious decision to believe. Every day. I keep deciding to believe.

Whether you think that you can, or that you can't, you are usually right.

Positive thinking will let you use the ability which you have, and that is awesome.

Probable impossibilities are to be preferred to improbable possibilities.

The mind controls so much of the body. We are much more than flesh and blood; we are complex systems. Patients do better when they have faith that they're going to do better. That's why I always tell my patients and their families not to neglect their prayers. There's nobody I don't say that to.

Make your faith larger than your fears and your dreams bigger than your doubts.

Does a person have to suspend their critical judgment in order to believe in something as improbable as miracles?" Craig sat upright in his chair and raised his index finger as if to punctuate his point. "Only if you believe that God does not exist!" he stressed.

For, you see, so many out-of-the-way things had happened lately, that Alice had begun to think that very few things indeed were really impossible.

Well, now that we have seen each other, said the unicorn, if you'll believe in me, I'll believe in you.

Alice: This is impossible. The Mad Hatter: Only if you believe it is.