We work in the dark to serve the light, we are Assassins.

(Welcome to the Knights of the dark brotherhood. Respect the Tenets.)

Tenet I. Never dishonor the Night Mother. To do so is to invoke the Wrath of Sithis.
Tenet II. Never betray the Dark Brotherhood or its secrets. ...
Tenet III. Never disobey or refuse to carry out an order from a Dark Brotherhood superior. ...
Tenet IV. ...
Tenet V. Never kill a Dark Brother or Dark Sister.
TenetVI. Stay your blade from the flesh of the Innocent.
TenetVII. Hide in plain site.
TenetVIII. Never compromise the Brotherhood.

NOTHING IS TRUE, EVERYTHING IS PERMITTED. WE WORK IN THE DARK TO SERVE THE LIGHT, WE ARE ASSASSINS.