What is the Strong version of ethical egoism? What is the Weak version of Egoism?
Strong ethical egoism says that it is always right to aim at one’s own greatest good, and never right not to do so. Weak ethical egoism says that it is always right to aim at one’s own greatest good, but not necessarily never right not to do so. So basically if I do something that is for my own greatest good (whether that is succeeding in some area, finding myself, etc.) it applies to both strong and weak egoism. However, if I do something that is not necessarily in my greatest good (such as helping homeless people, there are surely more profitable ways to spend your time, although not necessarily as positive) then strong ethical egoism says that is bad, but weak ethical egoism lets you slide.