An ancient Greek philosophy created by Zeno of Citium, in which he basically teaches that the best way to get rid of destructive emotions, like anger or rage.
Physical environment will determine the limited amount of resources that we could obtain to sustain our life.
During the process of obtaining this resource, humans are forced to connect/interact with one another.
This could happen in the form of competition where we prevent one another to obtain it , or in the form of cooperation where we work alongside each other to share the resource.