 If you pay attention to just one thing, let's say the tree, from this you can learn everything, okay? Mathematics, chemistry, biology, economics, anything you want to learn. Because the tree is a successful life by itself, if you observe it, you will know ecology, you will know economy, you will know science, everything. You must pay, you don't tell you, you must pay attention, it's always telling you. Are you breathing right now? Yes. So, what you're excelling, the tree is inhaling, what the tree is excelling, you're inhaling. So, is it speaking to you or not? Yes. You must listen, okay? For you. I have a, I have a conference to go to.