Ursula K. Le Guin said this quote

To the Bullock RoserootWhat's the thought you thinkall your life long?It must be a great one,a solemn one, to make you gazethrough the world at it,all your life long.When you have to look aside from ityour eyes roll, you bellowin anger, anxiousto return to it, steadilyto gaze at it, think itall your life long.