When we think of dirt, we usally think of the negative connotations associated with it. It's unsanitary, it ruins our clothes and it can make us sick. Everything about dirt is dirty to say the least; however, one must realize how important dirt is to our culture and to our very existence. Dirt is a symbol of the cycle of life--- so much so that biblical scriptures have used it as a means of creating life and taking life away. The image below illustrates this point, as Adam is shown to be conjured up via the dirt by this white being (presumably G-d).