Note 90 — Chapter XXIV · GORGIAS.

There would be also the like intercommunity of nature, if along with the pains and pleasures of the agent himself (which alone are regarded in the calculation of Sokrates in the Protagoras) you admit into the calculation the pleasures and pains of others concerned, and the rules established with a view to both the two together with a view to the joint interest both of the agent and of others.