Metta

"The Pali word metta means loving-kindness, friendliness, goodwill, benevolence, fellowship, amity, concord, inoffensiveness and non-violence. The Pali commentators define metta as the strong wish for the welfare and happiness of others (parahita-parasukha-kamana).

Essentially metta is an altruistic attitude of love and friendliness as distinguished from mere amiability based on self-interest."

from http://www.mettaforkatrina.org/origins.html
Source: source: http://www.accesstoinsight.org/lib/bps/wheels/wheel365.html#intro
Learn more about The Buddha's Words on Kindness (Metta Sutta), and about Three Aspects of Metta