firstly, there is no meaning to life. this is a hard concept to accept, because it would be much nicer for us all to have a purpose. this is one of the reasons man invented god. god gives us purpose. the meaning to life is to enjoy yourself, make friends, fall in love, have children, etc. if you cannot derive meaning from this, i pity you.
my morals are derived mostly from the 'nurture' i have been exposed to. they are instilled in me by my friends, my family, the society in which i live. it can be argued that some are inherent, or intuitive. so some morals, i may have been born with. i certainly do not know how to be 'good' by reading it in a book. and if this is your motive for altruism, it denigrates your actions.
So is there a God or not Oh great one ?