Compassion is the virtue of empathy for the suffering of others. It is regarded as a fundamental part of human love, and a cornerstone of greater social interconnection and humanism —foundational to the highest principles in philosophy, society, and personhood.
Compassion is often regarded as emotional in nature, and there is an aspect of compassion which regards a quantitative dimension, such that individual's compassion is often given a property of "depth," "vigour," or "passion." The etymology of "compassion" is Latin, meaning "co-suffering." More virtuous than simple empathy, compassion commonly gives rise to an active desire to alleviate another's suffering.
It is often, though not inevitably, the key component in what manifests in the social context as altruism. In ethical terms, the various expressions down the ages of the so-called Golden Rule embody by implication the principle of compassion: Do to others what you would have them do to you.
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