
“Not enough evidence God! Not enough evidence!”
As quoted in Wesley C. Salmon's "Religion and Science: A New Look at Hume's Dialogues," Philosophical Studies 33 (1978), p. 176.
Also in the New York Times article So God's Really in the Details? (May 11, 2002) by Emily Eakin: "Asked what he would say if God appeared to him after his death and demanded to know why he had failed to believe, the British philosopher and staunch evidentialist Bertrand Russell replied that he would say, 'Not enough evidence, God! Not enough evidence.'
The original source of this quote is an article by Leo Rosten published in Saturday Review/World (February 23, 1974) which features an interview with Bertrand Russell. There, Rosten writes http://www.unz.org/Pub/SaturdayRev-1974feb23-00025: "Confronted with the Almighty, [Russell] would ask, 'Sir, why did you not give me better evidence?'"
Disputed