Robert Grudin

“We are not great connoisseurs of the two twilights. We miss the dawning, exclusably enough, by sleeping through it, and are as much strangers to the shadowless welling-up of day as to the hesitant return of consciousness in our slowly waking selves. But our obliviousness to evening twilight is less understandable. Why do we almost daily ignore a spectacle (and I do not mean sunset but rather the hour, more or less, afterward) that has a thousand tonalities, that alters and extends reality, that offers, more beautifully than anything man-made, a visual metaphor or peace? To say that it catches us at busy or tired moments won't do; for in temperate latitudes it varies by hours from solstice to solstice. Instead I suspect that we shun twilight because if offers two things which, as insecurely rational beings, we would rather not appreciate: the vision of irrevocable cosmic change (indeed, change into darkness), and a sense of deep ambiguity—of objects seeming to be more, less, other than we think them to be. We are noontime and midnight people, and such devoted camp-followers of certainly that we cannot endure seeing it mocked and undermined by nature.

There is a brief period of twilight of which I am especially fond, little more than a moment, when I see what seems to be color without light, followed by another brief period of light without color. The earlier period, like a dawn of night, calls up such sights as at all other times are hidden, wistful half-formless presences neither of day nor night, that draw up with them similar presences in the mind. ”
― Robert Grudin, Time and the Art of Living

“Few fallacies are more dangerous or easier to fall into than that by which, having read a given book, we assume that we will continue to know its contents permanently, or having mastered a discipline in the past, we assume that we control it in the present. Philosophically speaking, "to learn" is a verb with not legitimate tense.”
― Robert Grudin, Time and the Art of Living