Richard Matheson said this quote

We've forgotten much. How to struggle, how to rise to dizzy heights and sink to unparalleled depths. We no longer aspire to anything. Even the finer shades of despair are lost to us. We've ceased to be runners. We plod from structure to conveyance to employment and back again. We live within the boundaries that science has determined for us. The measuring stick is short and sweet. The full gamut of life is a brief, shadowy continuum that runs from gray to more gray. The rainbow is bleached. We hardly know how to doubt anymore. (“The Thing”)