Why, just as it might be said if we stood alone and apart from others. A foot, for instance, I will allow it is natural should be clean. But if you take it as a foot, and as a thing which does not stand by itself, it will beseem it (if need be) to walk in the mud, to tread on thorns, and sometimes even to be cut off, for the benefit of the whole body; else it is no longer a foot. In some such way we should conceive of ourselves also. What art thou? A man. Looked at as standing by thyself and separate, it is natural for thee in health and wealth long to live. But looked at as a Man, and only as a part of a Whole, it is for that Whole's sake that thou

The Golden Sayings of Epictetus