Suppose Sartre is right when he says that a specific human being is “nothing else but the sum of his actions.” Does it follow that we cannot provide a definition of what human beings are in general?...

Suppose Sartre is right when he says that a specific human being is “nothing else but the sum of his actions.” Does it follow that we cannot provide a definition of what human beings are in general? Can you give a general definition of human beings that can distinguish them from all other kinds of animals and objects?