The Bhagavad-Gita is where God Himself talks to His devotee Arjuna.

The true basis of religion is not belief, but intuitive experience. Intuition is the soul’s power of knowing God. To know what religion is really all about, one must know God.

Never do anything that taints your mind. Wrong actions cause negative or evil mental vibrations that are reflected in your whole appearance and personality. Engage in those actions and thoughts that nurture the good qualities you want to have.

In the state of love, no matter what you do, it's going to be good.

Love is the heartbeat of all life.

What you are is much greater than anything or anyone else you have ever yearned for. God is manifest in you in a way that He is not manifest in any other human being. Your face is unlike anyone else's, your soul is unlike anyone else's, you are sufficient unto yourself; for within your soul lies the greatest treasure of all - God.

Whatever I do, I do with the greatest love that I have in me. Try this, and you will see that you do not become fatigued at all. Love is one of the greatest stimulants to the will. Under the influence of love the will can do almost anything.