Quotes from work
An Acceptable Time

An Acceptable Time is a 1989 young adult science fiction novel by Madeleine L'Engle, the last of her books to feature Polyhymnia O'Keefe, better known as Poly or Polly . Marketed as part of the author's Time Quintet , An Acceptable Time connects Polly's adventures with those of her parents, Meg Murry and Calvin O'Keefe, which take place a generation earlier. The book's title is taken from Psalm 69:13, "But as for me, my prayer is to You, O Lord, at an acceptable time."
“Truth is eternal. Knowledge is changeable. It is disastrous to confuse them.”
Source: An Acceptable Time