Hi Srinivasan, You typically did what Saratbabu advises budding entrepreneurs not to do for success-that is, you gave up!Unfortunately for you, 30 years ago, there wasn't anyone to guide you & tell you that your deprivation due to quota restrictions(over which, you, as an individual, have no control)need not mean end of the road to your dreams of becoming a scientist.There was and still is,a whole world outside the reach of the quotas!!If you had persisted with your dreams passionately and explored, you would have got access to it!But never mind it.Do you still want to be a scientist?Irrespective of your present age and other circumstances, you can still make it as a scientist,in your own right, if you are still passionate enough and are ready to jump out of your limiting mindsets and ready to explore! Best wishes