[1] The Bible
It is the key to understanding Western culture! As the official canon of Christianity, its most important theme is humanity.
[2] The Quran
The sacred text of Islam. In terms of worldly conquest, it has demonstrated more power than any miracle.
[3] Newton's *Mathematical Principles of Natural Philosophy*
Without Newton, there would be no modern science. Newton was the first to show that humans can gain insight into the mysteries of the world much like God, a thought unprecedented in the history of ideas.
[4] Darwin's *On the Origin of Species*
Darwin's greatness lies in finding change within things that seem unchanging and discovering relationships among things that appear unrelated.
[5] Freud's *The Interpretation of Dreams*
Dreams are one of the most universal psychological phenomena and also one of the sources of various superstitions and prophecies. Freud's primary contribution was his rational study of dreams as an object, leading to a groundbreaking discovery—the unconscious. Freud pointed out that humans are not the masters of their own behavior and spirit; they are largely controlled by the unconscious.
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