With all due respect to Richard Feynman, a noted recipient of the prestigious Nobel Prize for his contributions in Quantum Physics, he was reputed to have very tumultuous relationships with several wives, some who have reported that he was very boorish and constantly distracted from his relationships being forever absorbed in his work. It is not uncommon that people like him especially those involved with science often do not make the best relationships with their family members. I would have to say that if you want to make a reference to a credible source it would be best to look into what their strengths are. The issue here is how we feel about our relationships with children and grandchildren and I truly doubt that he is a viable source of reference in this case, just my opinion.