However, when co-authoring The Point of View of the Universe (2014), Singer shifted to the position that objective moral values do exist, and defends the 19th Century utilitarian philosopher Henry Sidgwick's view that objective morality can be derived from fundamental moral axioms that are knowable by reason. Additionally, he endorses Derek Parfit's view that there are object-given reasons for action.  Furthermore, Singer and de Lazari-Radek (the co-author of the book) argue that evolutionary debunking arguments can be used to demonstrate that it is more rational to take the impartial standpoint of "the point of view of the universe", as opposed to egoism—pursuing one's own self-interest—because the existence of egoism is more likely to be the product of evolution by natural selection, rather than because it is correct, whereas taking an impartial standpoint and equally considering the interests of all sentient beings is in conflict with what we would expect from natural selection, meaning that it is more likely that impartiality in ethics is the correct stance to pursue. 
Insights and discoveries revealed to human minds 2500 years ago, at the time of the Buddha (or even several centuries before that time), may have caused deep and revolutionary effects in the evolution of existing world views, no less important than the discoveries of Galileo and Copernicus have been for the eventual collapse of the world-view of medieval Christian civilization. These latter discoveries, which mark the outset of modern civilization, have become so much a part of commonplace or general information that they can be imparted to children in the lowest grades of elementary education, and are normally absorbed by them without difficulty.