Telos. This crucial phrase can be interpreted as "end," "goal," or "purpose." According to Aristotle, as humans, we have a telos that we must achieve. This telos is founded on our uniquely human ability to think rationally. Without this rational part of us, its claims about what we should do and who we are would not make sense. In other words, humans have a purpose or goal that they want to achieve. This purpose or goal could be called their telos (meaning "end" or "purpose"). People often use the word "telos" when talking about God. They say things like "God has a telos for humanity" or "humanity's telos is happiness." In these cases, "telos" means "goal" or "purpose." People are using it here to mean exactly what it means when used with humans: something that each individual person wants to achieve in life. According to Aristotle, as humans, we have a unique kind of soul called an epithymiai which means "a wanting to." This epithymiai drives us to seek out what we need to live a good life. The only thing that can satisfy this epithymiai is more knowledge. He also says that this desire to know more is what defines us as human.