We may also odd the following definition, that of calling that man happy who recognizes no good and evil apart from a good and an evil mind, who holds honour dear and is content with virtue, who is not the sort of person to let the workings of chance go to his head or crush his spirit, who does not recognize any good greater than the one he alone can confer upon himself, and who will find true pleasure in despising pleasures.

Seneca, ‘On the Happy Life’