Famous quotes containing the words exact and/or nature:
“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)
“In countries where there is a mild climate, less effort is expended on the struggle with nature and man is kinder and more gentle.”
—Anton Pavlovich Chekhov (1860–1904)