Belief consists in accepting the affirmations of the soul; unbelief, in denying them.
George Eliot

Faith makes all evil good to us, and all good better; unbelief makes all good evil, and all evil worse. Faith laughs at the shaking of the spear; unbelief trembles at the shaking of a leaf.
Robert Cecil

It is on the acceptance or rejection of the theory of the Unity of all in Nature, in its ultimate Essence, that mainly rests the belief or unbelief in the existence around us of other conscious beings besides the Spirits of the Dead.
H. P. Blavatsky

Just as no one can be forced into belief, so no one can be forced into unbelief.
Sigmund Freud

Likewise today, some Christians are content to merely exist until they die. They don't want to risk anything, to believe God, to grow or mature. They refuse to believe his Word, and have become hardened in their unbelief. Now they're living just to die.
David Wilkerson

No man is excluded from calling upon God, the gate of salvation is set open unto all men: neither is there any other thing which keepeth us back from entering in, save only our own unbelief.
John Calvin

Obedience is an act of faith; disobedience is the result of unbelief.
Edwin Louis Cole

Talk unbelief, and you will have unbelief; but talk faith, and you will have faith. According to the seed sown will be the harvest.
Ellen G. White

The fearful unbelief is unbelief in yourself.
Thomas Carlyle