Contemporary knowledge about God, Evolution, and the meaning of human life.
Methodology of spiritual development.
Agni Yoga/The Heart
The entire path of the psychoenergetical development of man is based on the development of the spiritual heart, because the highest spiritual achievements are realized by the energy of the consciousness expanded from the anahata chakra.
“… The heart should be understood as the only link between the visible and invisible worlds. … Only the thread of the heart leads one to the Infinity.” 
“Mergence with the Highest can be realized only through the kindled fire of the heart!” 
“In order to link the chain of the worlds (of the multidimensional space), one has to pay special attention to the heart. Only thus can we stay within the boundaries of… the growth of the spirit (i.e. the correct quantitative growth of the consciousness).” 
The spiritual heart is an organ of an individual consciousness that produces the emotions of love.
Emotions are states of consciousness. They are born not in the brain but in special structures of the organism — in the chakras.
By entering the anahata chakra, the consciousness enters the state of cordial love.
God is Love, therefore Mergence with Him is possible only if man transforms into Love and develops stability and power in this state.
“The heart is the link connecting the worlds, and only the heart can respond to the Heart of the Lord and the entire Hierarchy!” 
“… A consciousness that does not comprehend this can only mumble great words, but cannot apply them to life, because only a heart saturated with the Greatness of the Hierarchy can understand the entire greatness of the Cosmic Law.” 
“It is correct to say that love is a guiding, creative principle. This means that love must be conscious, (rightly) aspiring, and self-denying. … The heart filled with love is able and valiant and will expand until it encompasses (God).” 
“The love of the feat is not austere for those aflame in heart, but it frightens those who love their weaknesses and those who waver, embracing the illusionary ‘I’.
“The creative fire of the heart does not wander, it resolutely ascends by the steps of the Hierarchy to the Highest Light.
“Love is a guiding, creative principle.” 
Agni Yoga is the Path of fiery cordial love for God. It is a realization of the ideas of Bhakti Yoga.
Yet, we have to understand that one cannot develop the capability for the cordial love only by appealing to it or by means of psychoenergetical methods alone. Love is the result of the complex development of strong souls. And in order to gain such love, we have to form ourselves through usual earthly activity, through special esoteric practices, and what is most important — through intellectual work on ethical correction of ourselves.