Rabbi Elisha ben Abuyah used to say:
Those who are open to life’s lessons and who nurture no prejudices are like a blank sheet of paper on which God writes his words with divine ink
Those who are always looking on the world with cynicism and prejudice are like a sheet of paper already written upon and on which there is no room for new words.
Don’t bother about what you already know, or what you don’t know. Don’t think about the past or the future, just let the divine hands write down each day the surprises of the present.
From Paulo Coelho's Warrior of The Light online, Issue nº 199