Philosophers

Which philosopher said/wrote the following phrases:


1Man is born free, but is everywhere in chains?
2Religion in the sign of the oppressed - it is the opium of the people?
3I think, therefore, I am?
4If God did not exist, it would be necessary to invent him?
5For evil to prosper it only requires that good men do nothing?
6Man is condemned to be free?
7The only thing that I know is that I know nothing?
8Whereof one cannot speak, thereof one must be silent?
9God is dead, he remains dead, and we have killed him?
10God is not willing to everything and take away our free will?
quiz kindly submitted by Damocles on 23rd January 2015