Existentialism, a school of thought that arose in the 19th and 20th centuries, emphasizes individual autonomy, free will, and individual experience. Fundamental to this ideology is the idea that existence precedes essence, meaning that people determine their own purpose and meaning through their actions. Philosophers of existentialism like Jean-Paul Sartre and Nietzsche contend that life lacks inherent meaning, and it is up to each individual to create their own beliefs in a uncaring world.

This philosophy confronts conventional ideas of predetermination and the idea that life's significance is predetermined. Instead, existentialism suggests that individuals must confront the underlying irrationality of life and embrace their freedom to decide and do. This often results in an existential crisis, where persons struggle with feelings of nervousness and confusion as they confront the lack of intrinsic meaning. However, it is through this conflict that one can attain authentic existence by embracing accountability for one's choices and establishing personal significance.

Existentialist philosophy also explores themes of estrangement, hopelessness, and the state of being human. In a society where traditional principles and beliefs are often scrutinized, existentialism provides a framework for grasping the complexities of being human. By recognizing the void of universal truths, existentialist philosophy motivates individuals to thrive vividly and truly, despite the doubts and obstacles of life. It is a invitation to investment philosophy embrace the liberty and responsibility that come with being a person, and to find purpose in an otherwise indifferent universe.