Grenville Kleiser,
"Impromptu"; or, How to Think on Your Feet
“ The minute which is gone can never be recalled, while the next minute is fraught with uncertainty. We are sure—not of this minute, but of this instant only, of time. Then, while we may, let us say the loving word, do the kind act, suppress the unkind remark, encourage those who are struggling by the way—this minute. ”
