In Ajahn Mun’s book “A HEART RELEASED”, the root cause of everything in the universe is mentioned as mano(heart)/thitibhutam. Is this a way of summarizing the paticca samuppada?
Section 4. The root foundation for the practice.
… //Mano//, the heart, is primal, the great foundation. Everything we do or say comes from the heart, as stated in the Buddha’s words: //mano-pubbangama dhamma , mano-settha mano-maya//:
Section 5. The root cause of everything in the universe
Thus //mano//, discussed in Section 4; //thitibhutam//, which will be discussed in Section 6; and the great cause discussed here all refer to the same thing. … – for everything in the world comes about due to the great cause. Even the transcendent dhammas are reached by the great cause. This is why the Patthana is said to be infinite in its scope. Whoever trains the heart, the great cause, until it is clear and dazzling, is capable of knowing everything of every sort infinitely, both within and without.
Section 6. The root instigator of the cycle of death and rebirth.
//thitibhutam avijja paccaya sankhara…upadanam…bhavo…jati…// Each and every one of us born as a human being has a birthplace: we have our parents as our birthplace. So why did the Buddha formulate the teaching on sustained conditions only from the factor of unawareness onwards? What unawareness comes from, he didn’t say. Unawareness has to have a mother and father just as we do, and we learn from the above line that //thitibhutam// is its mother and father. //Thitibhutam// refers to the primal mind. … Awareness and unawareness both come from //thitibhutam//.
To summarize: //Thitibhutam// is the primal instigator of the cycle of death and rebirth. Thus it is called the root source of the three (see Section 12). When we are to cut the cycle of death and rebirth so that it disconnects and vanishes into nothingness, we have to train the primal instigator to develop awareness, alert to all conditions for what they really are. It will then recover from its delusion and never give rise to any conditions again. //Thitibhutam//, the root instigator, will stop spinning, and this will end our circling through the cycle of death and rebirth.