Rambam - Sefer HaMitzvos: Positive Mitzvah 107: Positive Mitzvah 107

Positive Mitzvah 107: Impurity of coming in contact with a Dead Body
Numbers 19:11 "He that touches the dead body of any man shall be unclean"

Contact with a dead body makes a person impure.

The world is a place of constant change and unrest. Each point in time is different from the point before and the point after it. Every point in space is its own entire world, with its own conditions and state of being. It is a world of fragments constantly rushing in a traffic of seeming anarchy.
Look at your own life: You do so many different things, one after the other without any apparent connection between them.
Inner peace is when every part of you and every facet of your day is moving in the same direction. When you have purpose, you have peace.

From: Bringing Heaven Down to Earth by Tzvi Freeman - tzvif@aol.com