Welcome to The Great Truth Book. Do you believe people are really alone in the cosmos? Where do you suppose humans originated? Why did humanity come to this place, and where will it ultimately end up? You will be able to find logical answers to these questions in The Great Truth. You will also find out how the soul works and whether it really lives forever. You’ll also find highly practical explanations for reincarnation, prodigies, psychic talents, extraterrestrials, UFOs, field circles, mysteries of old architecture, and other inexplicable phenomena. Sounds difficult to believe, doesn’t it?

INTRODUCTION
When we experience success and happiness in life, we often overlook the presence of spiritual beings, such as deities or God. However, when we encounter challenges, many of us turn to these divine beings for assistance. Why do we do this? It is because we often see no other way forward. Personal need and benefit typically drive our approach to these holy beings. Whether our requests receive responses from these divine entities remains a subject of debate. Furthermore, the existence of God itself is a matter of uncertainty in our beliefs. But if God does indeed exist, what is the nature of the relationship between God and humans? Is God willing to help us, and if so, how does He go about it?
I have personally gone through numerous difficulties in my life. During challenging times, I used to pray to holy deities for assistance. Through these experiences, I have come to believe that holy beings do exist, but they operate according to their principles when responding to human pleas. Even when I approached them with utmost respect, I found that I could not sway their decisions. Consequently, I embarked on a journey to uncover the truth about their principles and sought to scientifically prove their existence. I hope we can seek the truth together in this book.
Thuan Ngoc Nguyen
CHAPTER 1: THE BIGGEST QUESTION OF HUMANITY
The Theory of Evolution and the Origin of Humans
Where do your beliefs lie? If you are an atheist, you adhere to the theory of evolution by Charles Robert Darwin. Can you explain how the first single-celled organism appeared on Earth? Can you elucidate the transition from single-celled organisms to multi-celled ones, from multi-celled organisms to reptiles, and from reptiles to mammals? How did you account for the evolution of monkeys into humans, given the vast difference in intelligence between the two?
Do you subscribe to the idea that Africa is the cradle of humankind? If so, how do you explain that the first humans were Black, but now there are people with white, yellow, brown, and red skin? If you propose that climate conditions and the environment influenced the formation of different races after humans left Africa, how do you explain the following scenarios?
1. Algeria and Mali, neighboring African countries, have Black and white populations, respectively.
2. Libya and Nigeria, also neighboring African nations, have populations of different races and skin colors.
3. Egypt and Sudan, geographically close, are home to two distinct races with varying skin tones.
4. Russia and Mongolia, adjacent countries, have white- and yellow-skinned populations, respectively.
5. China borders Kazakhstan, yet Chinese people have yellow skin, while Kazakhstani people have white skin.
Why did ancient humans, after leaving Africa, not settle in Asia or Europe but instead embark on arduous journeys through mountains, rivers, deserts, and oceans to reach distant Australia? What means did they use to become aware of Australia’s existence and navigate their way there?
What caused ancient humans, upon leaving Africa, to abandon their native language and create numerous languages? This phenomenon did not occur when British people migrated to Australia, Spanish people to Mexico, or French people to Canada. They retained their native language and found ways to preserve it as the primary language in their new homes.
In recent decades, individuals from various nations, such as Vietnam, Japan, Korea, and China, have settled in the United States over multiple generations. While they use English in social interactions, they continue to converse in their mother tongues within their communities and families. They cherish, maintain, and pass down their native languages to subsequent generations. The creation of a new language, even in today’s advanced civilization, remains a challenging task. How, then, did ancient people do so effortlessly? If you lack explanations for these matters, you will find satisfying answers in the following chapters.
Issues related to spirit and the human brain
Do you follow philosophical schools of thought? Whether you are an idealist or a materialist, you have experienced psychic phenomena, including prophecies, telepathy, channeling, and glossolalia, at some point in your life.
Do you understand why prophets may anticipate individual futures and global events? Do you understand how psychics may accurately recall people’s pasts, expose events within the Earth, and picture distant locations?
Do you understand why mediums, while channeling spirits of the dead, can tell undiscovered stories, talk in foreign languages, or even cure the sick with water or leaves, thereby returning them to health? Furthermore, have you ever pondered why young prodigies with no formal schooling can effortlessly speak many languages and solve complicated mathematical equations that defy adults? The origins of prodigies’ knowledge, as well as the spiritual manifestations indicated above, will be thoroughly addressed in the next chapters.
Ancient Architectural Works and Unidentified Flying Objects (UFOs)
Do you believe that ancient humans constructed remarkable architectural wonders such as the Giza pyramid in Egypt, Stonehenge in England, and the Tiwanaku site in Bolivia? Any idea how they did it with the primitive tools of their time?
Do you hold the belief that extraterrestrial beings exist? If so, what are your thoughts on their intentions when visiting Earth? Can you explain the purpose behind the creation of enigmatic crop circles in fields? Do you understand the energy sources that drive unidentified flying objects (UFOs)? Can you rationalize why UFOs frequently appear in regions experiencing natural disasters on Earth? For instance:
1. On 03/11/2011, Japan witnessed a UFO during the earthquake and tsunami dual disaster.
2. A UFO appeared during the severe dust storm that swept through Mesa, Arizona (USA), on 07/06/2011.
3. A UFO was sighted during Hurricane Irene on 08/28/2011 in New York.
Information about such events is freely available on numerous internet sites and has attracted the interest of many, but no one has been able to provide a definite explanation. Still, the next chapters will help clarify everything.
Unjustified Religious Issues
Do you follow a specific religion? If you practice Buddhism, do you accept ideas like karma and reincarnation? If so, do you suppose souls stay conscious in the next world? These spirits reincarnate into humans in what manner? Is this procedure overseen by a divine being? Buddhist beliefs hold that nirvana comes from holiness. What is nirvana? How will people live after they reach it? What are your ideas about the existence of God as a Christian, Muslim, or Jew? Is God corporeal in nature? If you believe that God created humans and life on Earth, could you explain how these events happened? Can you explain why God punishes all humans for Adam and Eve’s sins?
Why do you think God predetermines the fate of everyone, leading some to happiness, wealth, and power, while others endure poverty, misery, or disability? Certain religions assert that God created all humans as equals, so why does God impose inequality when it comes to their destinies? The pages that follow will address and clarify numerous questions and ambiguities surrounding these topics, providing clear and scientific explanations.