Painting responded to the plague-darkened vision of the human condition provoked by repeated exposure to sudden, inexplicable death. Tuscan painters … - William Hardy McNeill

John Dewey's Human Nature and Conduct...What struck me... was the related idea that human thought is a reaction to frustrated habit— what people often do when the outcome of their action disappoints their expectation. I concluded that unthinking, habitual action is the natural and truly happy way of life; whereas thought is a symptom of dysfunction but conducive to survival all the same since, every so often, new thoughts find ways of escaping the frustration that provoked them by inventing satisfying new ways to get things done.

When terms... evolve and change definition with time; and when the social reality which terms are intended to organize and render intelligible is also seen to be in flux, capturing the truth in a net of words becomes a matter of intuition and style more than of any scientific method that can be replicated by others and made to achieve the same result every time someone asks the same question, or undertakes the same operations.

With the historicization of the heavens the age-old idea of discovering universal laws of behavior applicable everywhere and always seems to have lost plausibility, whether for sub-atomic particles or for human beings. ...all such patterns and regularities, it seems to me, should be understood to be limited, local, evanescent — including, now, even the laws of physics.