People go through their whole lives chasing everything in the material world, and they fail to discover the greatest treasure of all, which is within them. Shut your eyes to the outside world. Direct your thoughts and words to the inside of you. The Master within you is the key to all the treasures in the world.
Rebirth is not a belief, it is a fact. According to Science, whatever effect emerging from a cause will have to merge with the cause ultimately. Similarly your mind is the cause for the birth and mind is existing because of the conscious cause. The mind has to merge with the consciousness (Paramatma). Then you are relieved from the cycle of rebirths.