So let's start week one with what is a purpose in life? Really important question obviously, and to start answering that question, we're going to talk about the concept of purpose in life. We're also going to talk about a couple of related concepts. Self-affirmation, this is a really important and very related concept to purpose. And then we're going to talk about purposeful, so you could have a purpose but not be purposeful. Be hard to be purposeful without having purpose, so we're going to talk about those concepts. All three are super important to this idea of purpose in life and the related research then. We're going to understand some of the central components of purpose that relate to philosophical themes. And as I said before we're going to cover in the first two weeks, I think the background that's necessary to frame out the science of purpose. And even in week 1 we're going to cover some of the neural activation components of purpose in life too. So we'll be covering a little bit of science, a lot of philosophy and trying to organize these concepts in a way that makes sense. So the first question what is the purpose in life? So there are a number of different definitions of purpose in life. I'm going to give you my favorite definition and that's that purpose in life, is a central self-organizing life aim. And there are two sub components of this. By central self-organizing life aim, it's a predominant theme of a person's self. And it also motivates intention to dedicate resources in a particular direction and toward particular goals. Let's start out with this first bullet point, that it's a predominant theme of a person self. That relates to the fact that this is central and its a life aim. So what we're really asking here is who are you? What is the theme of your life? Who are you, what is yourself? So those things are really, really important. I want to start with this idea of a theme you might be asking, what do you mean by theme, Vic? Here's what I mean by theme, we may have theme colors that we create. We've just moved into a new house and we want to paint it in a certain way. The painter may say well, what kinds of thematic colors do you want? Or there's theme music, you know that you're in a Bond movie or a Harry Potter movie. Or a Star Wars movie by the theme of the music, while the music itself may differ a little bit across those different bond movies there is a central background theme. So that's what we're referring to here. There's also of course, theme parks. So if you go into a particular theme park, you know that you're going to get rides or experiences that are related to that overall theme. That's why they call it a theme park. So this idea of theme is really basic to having a purpose and in particular, it's related to your relationship with yourself. What do you think about yourself, is yourself just all over the place or is there some sort of central overriding theme that dictates other smaller components of your life and yourself? So, this guy his name is Friedrich Nietzsche and he talked a lot about this idea of having a theme and here's what he said. In the end, when the work is finished it, becomes evident how the constraint of a single taste governed and formed everything large and small. Friedrich Nietzsche was a philosopher in the mid to late 1800s, very, very influential to the whole existentialist philosophy movement. And this is an interesting thing, he says basically, there's a single taste or a single theme that starts governing other things. And when he says the work is finished, he's really talking about your purpose, when your purpose, when yourself is finished. Does that makes sense? You also said it's important to have a style, once you have a theme you're starting to build a style from that theme. So, just think about a James Bond movie which has a certain style to it. A Harry Potter movie has a certain style, a Star Wars movie has a certain style. Those have theme music and that provides a certain style.