Do not lose heart, replied Socrates, and the day may come when you will understand.
Do not lose heart, Philip; he cannot last forever; and this week how ill he has been!
But don't you lose heart, Jim, for I'm sure this isn't the end of our story, by any means.
Do remember if you lose heart about your work, that none of it is lost.
At twenty yards they slowed down and stopped, ...