Advaita philosophy is a Hindu philosophy and concept developed by a great saint called Adi Shankaracharya! He believes everything in the universe is one and differences we perceive are the effect of 'Maya'. Maya is delusion! Everything is continuously churned from one form to another. So the physical body will be recycled but the consciousness merges with supreme consciousness which we refer to as 'God'! So one should seek God within one self. The consciousness is called 'atma' or soul and the ultimate goal of life is to make this atma to merge with param atma or 'God', which releases the soul from the worldly ties! Salvation!!