In order to succeed, we must first believe that we can.
He can who thinks he can, and he can't who thinks he can't. This is an inexorable, indisputable law.
There can be no deep disappointment where there is not deep love.
Everything is possible for him who believes.
Science moves with the spirit of an adventure characterized both by youthful arrogance and by the belief that the truth, once found, would be simple as well as pretty.
If you must tell me your opinions, tell me what you believe in. I have plenty of doubts of my own.
Those who stand for nothing fall for anything.
It is my own firm belief that the strength of the soul grows in proportion as you subdue the flesh.
For those who believe, no proof is necessary. For those who don't believe, no proof is possible.
Sometimes I've believed as many as six possible things before breakfast.
What ever the mind of man can conceive and believe, it can achieve.
I believe in Christianity as I believe that the sun has risen; not only because I see it, but because by it I see everything else.
To believe a thing is impossible is to make it so.
Men are disturbed not by things, but by the view which they take of them.
Everyone believes very easily whatever they fear or desire.