“I am not my own light unto myself.”
                                        
                                        Dialogues on Metaphysics (1688) Dialogue III 
Variant translation:  I am not a light unto myself.
                                    
Wherever You Go, There You Are: Mindfulness Meditation in Everyday Life (2005)
“I am not my own light unto myself.”
                                        
                                        Dialogues on Metaphysics (1688) Dialogue III 
Variant translation:  I am not a light unto myself.
                                    
                                        
                                        VI, 4 
The Persian Bayán
                                    
“You yourself may not be luminous, but you are a conductor of light.”
                                        
                                        Variant: The light came into the darkness, and the darkness did not understand it, but that no longer mattered because the light was now obliteration the darkness. 
Source: House