Help us to complete the source, original and additional information
Simone Weil 193
French philosopher, Christian mystic, and social activist 1909–1943Related quotes
                                
                                    “I doubt, therefore I think, therefore I am.”
                                
                                
                                
                                
                                    
                                    Cogito, ergo sum.
                                
                            
                                        
                                        Variant: Dubito, ergo cogito, ergo sum.
(English: "I doubt, therefore I think, therefore I am")
                                    
“I believe I am in Hell, therefore I am.”
                                        
                                         Une Saison en Enfer http://www.mag4.net/Rimbaud/poesies/Season.html (A Season in Hell) (1873) 
Variant: I believe I am in Hell, and so I am there.
                                    
“I think I am, therefore I am. I think.”
Books, Napalm and Silly Putty (2001)
“I am weak and therefore I am strong.”
As quoted in Haiping Yan's Chinese Women Writers and the Feminist Imagination, 1905–1948 (New York: Routledge, 2006), p. 8
Source: Break-Out from the Crystal Palace (1974), p. 40
Source: Sister Outsider: Essays and Speeches (1984), p. 38
                                        
                                        Je pense, donc je suis. 
Le Discours de la Méthode (1637) 
Variant: I think, therefore I am.