There are some things which cannot be learned quickly,
and time, which is all we have,
must be paid heavily for their acquiring.
They are the very simplest things,
and because it takes a man’s life to know them
the little new that each man gets from life
is very costly and the only heritage he has to leave.
– Ernest Hemingway (From A. E. Hotchner, Papa Hemingway, Random House, NY, 1966)