The foundation of the Kingdom of God is laid upon justice,
fairness, mercy, sympathy and kindness to every soul. Then strive ye with heart
and soul to practice love and kindness to the world of humanity at large,
except to those souls who are selfish and insincere. It is not advisable to show
kindness to a person who is a tyrant, a traitor or a thief because kindness
encourages him to become worse and does not awaken him. The more kindness you
show to a liar the more he is apt to lie, for he thinks that you know not,
while you do know, but extreme kindness keeps you from revealing your
knowledge. (‘Abdu'l-Baha,
Baha'i World Faith - Abdu'l-Baha Section)
