In ordinary speech the words perception and sensation tend to be used interchangeably, but the psychologist distinguishes. Sensations are the items of consciousness--a color, a weight, a texture--that we tend to think of as simple and single. Perceptions are complex affairs that embrace sensation together with other, associated or revived contents of the mind, including emotions.
Jacques BarzunMachines are admirable and tyrannize only with the user's consent. Where, then, is the enemy? Not where the machine gives relief from drudgery but where human judgment abdicates. The smoothest machine-made product of the age is the organization man, for even the best organizing principle tends to corrupt, and the mechanical principle corrupts absolutely.
Jacques BarzunOut of man's mind in free play comes the creation Science. It renews itself, like the generations, thanks to an activity which is the best game of homo ludens: science is in the strictest and best sense a glorious entertainment.
Jacques BarzunMaxims in times of danger are useless, experience is incommunicable. The knotted strands of life, desire, assumptions, and moral codes cannot be unsnarled; they can only be cut, which is what happens when an air raid occurs, with a silencing fortissimo like the finale of a Beethoven symphony.
Jacques BarzunThe world has long observed that small acts of immorality, if repeated, will destroy character. It is equally manifest, though never said, that uttering nonsense and half-truth without cease ends by destroying Intellect
Jacques Barzun