Castelli's 1613 letter to Galileo leads off, followed by Galileo's thoughtful reply which he later lengthened and transformed into the «Letter to the Grand Duchess.» (firstthings.com)
She soon found a rebellious courage to ditch the form - letter response, and secretly composed her own thoughtful replies to the passionate letters. (bookpage.com)
(And thank you SO MUCH for your calm, informed, and thoughtful replies on TPV. (querysharkbait.com)