The philosophy of meaning primarily investigates the nature, sources, and significance of meaning in human existence.

Existentialists emphasize the importance of individuals discovering and fulfilling their unique potential and purpose, finding meaning through authenticity and self-realization.

Logotherapy, developed by Viktor Frankl, focuses on the search for meaning in life, particularly in the context of human suffering and adversity.

Rationalism, particularly as propounded by philosophers like René Descartes, highlights the significance of reason and intellectual inquiry in finding meaning and understanding the world.

The 'meaning crisis' refers to the prevalent feeling of meaninglessness and purposelessness experienced by individuals in modern society, often attributed to factors like rapid technological change, societal fragmentation, and the decline of traditional belief systems.

Camus' philosophy centers around the idea of the absurd, which arises from the contrast between humanity's inherent desire for meaning and the seemingly meaningless nature of the universe.

In Aristotelian philosophy, 'telos' refers to the final cause or purpose of a thing, which guides its development and behavior.

Existentialism, particularly through thinkers like Jean-Paul Sartre and Simone de Beauvoir, emphasizes the significance of individuals creating their own meaning through their choices, actions, and relationships.

The 'hedonic treadmill' refers to the phenomenon where individuals quickly adapt to positive experiences, leading to a diminished sense of meaning and a constant pursuit of new sources of pleasure.

The 'paradox of hedonism' refers to the idea that the pursuit of pleasure can ironically lead to unhappiness, as it can result in a cycle of dissatisfaction and an inability to find lasting fulfillment.

Communitarianism emphasizes the significance of community and social bonds in finding meaning and purpose, viewing the individual as part of a larger social fabric.

'Ikigai' is a Japanese concept that refers to the intersection of one's passion, mission, vocation, and profession, representing a sense of purpose and fulfillment in life.

Rationalism, particularly as propounded by philosophers like René Descartes and Baruch Spinoza, emphasizes the significance of reason and intellectual inquiry in finding meaning and understanding the world.

Existential angst, also known as existential anxiety, refers to the feeling of unease, dread, and uncertainty that arises from the awareness of one's own existence, freedom, and responsibility.

Virtue ethics, as propounded by philosophers like Aristotle and Confucius, emphasizes the importance of developing virtues and moral character as a means of finding meaning and purpose in life.