Yusuf al-Qaradawi, widely considered the preeminent Muslim Brotherhood theologian, returned to Cairo today to call on Egyptians to "guard your revolution," according to The Christian Science Monitor.

"Don't let anyone steal this revolution from you - those hypocrites who will put on a new face that suits them," Qaradawi warned in his first public speech since 1981.

The CSM explains:

The massive turnout and Mr. Qaradawi's warning that the revolution is not complete demonstrate that if the military drags its feet on reform, another uprising could begin. And while his sermon was nonsectarian and broadly political, the turnout was also a reminder that political Islam is likely to play a larger role in Egypt than it has for decades.