"Time has too much credit," said Bridget. "I never agree with the compliments paid to it. It is not a great healer. It is an indifferent and perfunctory one. Sometimes it does not heal at all. And sometimes when it seems to, no healing has been necessary."
Darkness and Day (London: Victor Gollancz,  1974) p. 216.
Pushing forty? She's clinging on to it for dear life!
A common misattribution first made by Nigel Rees in Quote…Unquote 3 (London: Allen & Unwin, 1983) as the result of a mishearing, and withdrawn by him in Cassell Companion to Quotations (London: Cassell, 1997) p. 179.