They whose activity of imagination is often shifting the scenes of expectation, are frequently subject to such sallies of caprice as make all their actions fortuitous, destroy the value of their friendship, obstruct the efficacy of their virtues, and set them below the meanest of those who persist in their resolutions, execute what they design, and perform what they have promised.
Samuel JohnsonMany a man is mad in certain instances, and goes through life without having it perceived. For example, a madness has seized a person of supposing himself obliged literally to pray continually; had the madness turned the opposite way, and the person thought it a crime ever to pray, it might not improbably have continued unobserved.
Samuel Johnson