Unbelief

Unbelief is actually perverted faith, for it puts its trust, not in the living God but in dying men. The unbeliever denies the self sufficiency of God and usurps attributes that are not his. This dual sin dishonors God and ultimately destroys the soul of man. - A. W. Tozer

Unbelief is the parent of all evil, and the very essence of unbelief lies in departing from God, as the living God -- The fountain of all our life, holiness, happiness. - John Wesley

Our twentieth century, far from being notable for scientific skepticism, is one of the most credulous eras in all history. It is not that people believe in nothing -- which would be bad enough -- but that they believe in anything - which is really terrible. - Malcolm Muggeridge