Mix a little foolishness with your serious plans. It is lovely to be silly at the right moment.
Mountains will go into labour, and a silly little mouse will be born.
Mix a little foolishness with your prudence: it's good to be silly at the right moment. (Odes, bk. 4, no. 12, l. 27)
Mix a little foolishness with your serious plans; it's lovely to be silly at the right moment