rule to judge

When, after having read a work, loftier thoughts arise in your mind and noble and heartfelt feelings animate you, do not look for any other rule to judge it by; it is fine and written in a masterly manner.

—La Bruyère, Characters (Oxford U. Press, 1962), translated by Henri Van Laun.

life force

The book of poems was so good you believed at any moment it would animate, turn into a kind of bird, and fly from your hands.