My friends screen name is sad monk and I asked him why he picked that and this is what he sent to me
Why Sad Monk?
I am the Sadmonk for the worlds suffering.
I am sad for others, not for self.
I have found a way out of suffering- "self" does not exist.
Now I must help those who are still suffering.
"All the joy the world contains
Has come through wishing Happiness for others.
All the misery the world contains
Has come through wanting pleasure for oneself."
(Bodhicharyavatara-Way of the Bodhisattva)
"When the Bodhisattva is sad, however, this suffering is not for himself or herself..It is not "my' sadness. This sadness leads directly to compassionate action that helps others, because when you are sad for other beings, this goodness that we all have inside just wants to help take away the suffering that others experience." Seung Sahn-Korean Zen Master