Gita

As Ascent of Man said "when you are younger science and the rational appeals to you more".

And so for me it was the appeal of science that appeals when I was younger. Emotions and spiratuality was a thing that did not resonate to me. Scientifically it was the absence of adult looking young man who still had to develop his forntal cortex, the seat of higher executive decision making.

And as you age your appreciation of Arts and spirutuality becames more appreciated. And so happened with me. It is not about ROI on how you utilize time, (maybe of the competetive enviroment in the movie "Three Idiots") but how much time if left before you that you want to do with it. When I first heard it when I turned 30 and I was lamenting about of few years I sort of had lost in this rat race and I was behind, I was reminded of how many years more I had in front of me.

And thus became appreciation of spirituality in me. Understanding the closest of spirituality thought process was Naturalism.

But the most I ever did connect to was Gita. What I like about it, though it has the faint backgound of God, but still in the core it has a very sceintific way of looking at things. The concept of Karma and detachement.  A very good intoroduction to Gita.

And as I told to Rose, Gita is a product of time. Not incidentally it was written at height of Hinduism. At one of most properous epoch of India.
During the centuries in which Buddhism was establishing itself in the east of India, the older Brahmanism in the west was undergoing the changes which resulted in the Hinduism which is now the prevailing religion of India