 To act for the sake of persons as ends in themselves, to respect them, is not to pursue or promote them, but to value them as the unconditionally valuable beings they are. It is also to acknowledge that there are constraints on our treatment of persons, for to be an end in itself is also to be a limit--just as the end of the road puts a limit on our travels, so an end in itself puts an absolute limit on the subjective ends we may set, the means we may use to pursue them, and, very importantly, on how we may treat ends in themselves. Such beings must never be used as if they were merely means, as if they were nothing more than tools that we may use however we want to advance our ends. Note, however, that it is not wrong to treat persons as means to our ends; indeed, we could not get along in life if we could not make use of the talents, abilities, service, and labor of other people. What we must never do is treat persons as mere means to our ends, to treat them as if the only value they have is what derives from their usefulness to us. Rather, we must always treat them “as the same time as an end.”