Every night before a Michigan game, the defensive starters gather together in a room all by themselves, no coaches, just players...they dim the lights and recite the following poem by Rudyard Kipling...
Now this is the Law of the Jungle -- as old and as true as the sky;
And the Wolf that shall keep it may prosper, but the Wolf that shall break it must die.
As the creeper that girdles the tree-trunk the Law runneth forward and back --
For the strength of the Pack is the Wolf, and the strength of the Wolf is the Pack.