The philosopher Karl Popper (in Dialectica 32:342) declared: "It is important to realize that science does not make assertions about ultimate questions—about the riddles of existence, or about man’s task in this world. This has often been well understood. But some great scientists, and many lesser ones, have misunderstood the situation. That fact that science cannot make any pronouncement about ethical principles has been misinterpreted as indicating that there are no such principles while in fact the search for truth presupposes ethics."
