Just open firefox and type about:mozilla followed by [enter] key...
You will see message:
And so at last the beast fell and the unbelievers rejoiced.But all was not lost, for from the ash rose a great bird. The bird gazed down upon the unbelievers and cast fire and thunder upon them. For the beast had been reborn with its strength renewed, and the followers of Mammon cowered in horror.
from The Book of Mozilla, 7:15
The Book of Mozilla is a well-known computer Easter egg found in the Netscape and Mozilla series of web browsers. The Easter Egg is viewed by having the browser go to the page about:mozilla.