I consider myself convicted by the testimony of Holy Scripture, which is my basis; my conscience is captive to the Word of God. Thus I cannot and will not recant, because acting against one's conscience is neither safe nor sound. God help me. Amen.
Martin Luther at the Diet of Worms, 1521
Taken from the book Genius, Greif & Grace: A Doctor Looks at Suffering and Success By Dr Gaius Davies