According to Saginthesun the idea that everything in existence has been recurring over time and space and will continue to do so is often cited as a critical element of Nietzsche’s philosophy. Some people have interpreted the concept as something like reincarnation, but it is much more than that for Nietzsche.

While Nietzsche is widely regarded as one of the most influential philosophers of all time, his writings are often difficult to interpret. Moreover, many of his views are highly speculative in nature, so it takes work to know exactly how and when Nietzsche came up with them.

Several significant themes are central to Nietzsche’s work, but one is particularly noteworthy: the idea of eternal recurrence (also referred to as die ewige Wiederkunft or die ewige Wiederkehr). This idea, which is discussed in Thus Spoke Zarathustra and appears in a brief passage in The Gay Science, is generally considered by most scholars to be one of his most influential beliefs.

However, the most scholarly attention to the idea of eternal recurrence has focused on the context in which it first occurs, namely in Thus Spoke Zarathustra, rather than the general meaning of the term. This is understandable since most of the scholarly focus on Nietzsche’s writing is on his more accessible, famous works.

However, the fact that most of the scholarly attention to this idea has been concentrated on its context means that the thought is frequently misunderstood and can be misleading when read in isolation. This is mainly because most of the scholarship that deals with Nietzsche’s ideas ignores or does not fully engage with the dense, complex work that is Thus Spoke Zarathustra.

In this book, Nietzsche explores the relationship between life and death, which is a crucial theme in his work. He is also interested in the question of how one can achieve a sense of purpose and morality in an ever-changing world.

The eternal recurrence was also one of the most fundamental principles that Nietzsche taught in his earliest works, especially in The Gay Science. It is a principle that Nietzsche considered to be his most crucial philosophical discovery.

It was the belief that an individual must fully embrace their life, a way of living that does not depend on any transcendent source--such as God or a soul--to validate their identity.

For Nietzsche, this was a way to test the strength of an individual and find out whether they could affirm the world around them, even in a world full of sin and pain.

According to this principle, the most vital individuals in the world will have the capacity to embrace their lives and find happiness in them despite the recurrence of events and the constant nagging feeling that they are being punished.

The idea of eternal recurrence is, therefore, central to the cosmology Nietzsche develops in Thus Spoke Zarathustra. It is also a core idea in his most famous essays, such as Beyond Good and Evil and On the Genealogy of Morality, as well as in his newest novel, Ecce Homo. The question of how Nietzsche came to believe in the concept is a significant one that requires serious analysis and has prompted considerable controversy.