All the virtuous deeds and merit,
Such as giving and making offerings,
That we have accumulated over thousands of aeons
Can be destroyed by just one moment of anger.
There is no evil greater than anger,
And no virtue greater than patience.
Therefore, I should strive in various ways
To become familiar with the practice of patience.
If I harbor painful thoughts of anger,
I shall not experience mental peace,
I shall find no joy or happiness,
And I shall be unsettled and unable to sleep.
—Shantideva (687-763 C.E.)