According to the Buddha's teaching the beginning of the life-stream of living beings is unthinkable. THe believer in the creation of life by God may be astonished at this reply. But if you were to ask him 'What is the beginning of God?' he would answer without hesitation 'God has no beginning', and he is not astonished at his own reply.
Faith in God is optional, but faith in the self – in the spirit within, is imperative.
What a paradox it is, the sane causes more problems than the insane! It is! The real problems of the world do not come from the insane but, the sane!