Fyodor Dostoyevsky
Publisher: Penguin Classics (2003)

Je pense, donc je suis, that is the one thing I know for sure, and as for all the rest of what surrounds me, all these worlds, God and even Satan himself - for me it remains unproven whether all that exists in itself or is merely a certain emanation of mine, the logical development of my I, which has a pre-temporal and individual existence...