I believe all suffering is caused by ignorance.
People inflict pain on others in the selfish pursuit of their
happiness or satisfaction.
Yet true happiness comes from a
sense of peace and contentment, which in turn must be
achieved through the cultivation of altruism,
of love and compassion,
and elimination of ignorance, selfishness,
and greed.
  ~ Dalai Lama
   1989 Nobel Peace Prize Speech

Tact is the ability to describe others
as they see themselves.
  ~ Abraham Lincoln