If you aren't confused by quantum physics, then you haven't really understood it.

To love is to admire with the heart; to admire is to love with the mind.

The first duty of love is to listen.

 "The fact that you are willing to say,
   'I do not understand, and it is fine,'
   is the greatest understanding you could exhibit."
         Dr. Wayne Dyer
  "Understanding a person does not mean condoning;
   it only means that one does not accuse him
   as if one were God or a judge placed above him."
         Erich Fromm

  "It's surprising how many persons go through life without ever
   recognizing that their feelings toward other people
   are largely determined by their feelings toward themselves."

 "The three hardest tasks in the world are neither physical feats
   nor intellectual achievements, but moral acts:
   to return love for hate, to include the excluded,
   and to say, "I was wrong."

"People who say 'I understand exactly how you feel'
   never understand exactly how you feel."