Chapter 6

depend upon thought--We are not grateful for the advantages which we receive from inanimate Nature, or from dumb animals--In order to lay me under an obligation you must benefit me intentionally--Cleanthes's story of the two slaves--Of benefits given in a mercenary spirit--Physicians and teachers bestow enormous benefits, yet are sufficiently paid by a moderate fee--Plato and the ferryman--Are we under an obligation to the sun and moon?--Ought we to wish that evil may befall our benefactors, in order that we may show our gratitude by helping them?