Famous quotes containing the words called and/or optimal:
“It has been so written, for the most part, that the times it describes are with remarkable propriety called dark ages. They are dark, as one has observed, because we are so in the dark about them.”
—Henry David Thoreau (1817–1862)
“In the most desirable conditions, the child learns to manage anxiety by being exposed to just the right amounts of it, not much more and not much less. This optimal amount of anxiety varies with the child’s age and temperament. It may also vary with cultural values.... There is no mathematical formula for calculating exact amounts of optimal anxiety. This is why child rearing is an art and not a science.”
—Alicia F. Lieberman (20th century)