Abstract
From the dawn of human intelligence to the present era, the question ‘does God really exist?’ has been important for human being. Is there any proof of his existence? Philosophers, scholars, preceptors, monks and even atheists have tried to find the answer in their own ways. Various schools of Indian philosophy have also expressed their views about God’s existence. Some schools of Indian philosophy have accepted the ideas of karma, karmaphala, rebirth etc. They have denied to admit the existence of God due to their own philosophical standpoint hence they have presented a series of arguments to refute the existence of God. Udayanāchārya, a famous Indian philosopher of the 10th century A.D., belonging to the Nyāya School, has shown some refined arguments to prove the existence of God. This paper presents his way of reasoning examining whether the belief in the existence of God is reasonable or not.