One day in the early morning Gautama Buddha was sitting in a garden quietly with his disciples. A man arrived silently and stood in the shadows, that man was a great devotee of Lord Rama. He had built many temples across the country, he had devoted many years in the service of Lord Rama. He would always chant Rama's name and contemplate on Rama's greatness. He was old and close to his last years. Even after many years of dedicated spiritual effort he was not realized.
He wanted to know for sure if there is a God or not? When he heard about the realized one (Buddha) , he came to get his doubt cleared. When he felt nobody would notice him talking to Siddartha, the Buddha. He asked Gautama "O enlightened one, Please tell me the truth! and truth only. Is there a god?".
Buddha, from his intuition knew that man to be a great devotee of Lord Rama, he looked at that man with seriousness and said "No, My friend. There is no god".
It was getting late in the evening, and once again the disciples came back and sat around the Buddha.
There was a materialist who had been an atheist all his life, he had convinced 1000s of people that there was no god, he used to go to the priests and scholars and defeat them in the argument about god.
He too was getting old and little suspicion arose in him, "what if there is god? isn't it waste of my life to spread the "NO GOD" message if there is god?" he thought. He was eaten by this doubt, he finally decided to know the truth and sought the enlightened one.
He slowly came up to where Buddha was sitting, and asked him "They say you are enlightened, Please tell me if there is GOD?".
Buddha knowing that man to be an atheist said with firm voice as if he is in firm conviction "Yes, there is God".