Existentialism emphasizes the importance of individual freedom and responsibility in creating meaning in one's life, rather than relying on external sources or societal expectations.

The 'hard problem' of consciousness refers to the challenge of understanding how physical processes in the brain give rise to the subjective, qualitative aspects of conscious experience, such as the feeling of pain or the taste of coffee.

Utilitarianism is an ethical theory that holds that the best action is the one that produces the greatest amount of happiness for the greatest number of people.

Panpsychism is the philosophical view that consciousness is a fundamental property of reality and is present in all things, from atoms to animals to plants.

Camus argued that the absurd condition of human existence arises from the conflict between our innate desire for meaning and purpose and the apparent meaninglessness and indifference of the universe.

The 'veil of ignorance' thought experiment is a hypothetical scenario in which individuals make decisions about the distribution of resources and social policies without knowing their own position in society. This experiment is used to illustrate the importance of considering the interests of all members of society, rather than just one's own.

Abraham Maslow, a humanistic psychologist, proposed a hierarchy of needs, with self-actualization at the top. He believed that the meaning of life is to strive for personal growth and fulfillment, and to realize one's full potential.

An existential crisis is a period of intense self-reflection and questioning of one's purpose, values, and place in the universe. It is often triggered by major life events or experiences that challenge one's assumptions about the meaning of life.

Descartes' famous statement 'Cogito ergo sum' is often considered the starting point of modern philosophy. It expresses the idea that the only thing one can be certain of is one's own existence, as evidenced by the act of thinking.

The 'meaning crisis' is a sense of purposelessness and lack of direction in life that is often experienced by individuals in modern society. This crisis can be triggered by various factors, such as the rapid pace of technological change, the erosion of traditional values, and the increasing emphasis on individualism.

Aristotle believed that the meaning of life is to live in accordance with nature, which he defined as the rational pursuit of happiness. He argued that human beings have a natural telos (purpose) and that living in accordance with this telos leads to eudaimonia (flourishing).

The 'paradox of hedonism' is the idea that pursuing pleasure leads to unhappiness. This paradox arises from the fact that pleasure is often fleeting and unsatisfying, and that the pursuit of pleasure can lead to addiction, burnout, and other negative consequences.

Buddha, the founder of Buddhism, taught that the meaning of life is to transcend the ego and achieve a state of enlightenment, or nirvana. This state is characterized by the absence of suffering, desire, and ignorance.

The 'free will problem' is the difficulty of reconciling free will with determinism. Determinism is the idea that all events, including human actions, are causally determined by prior events. If determinism is true, it seems to follow that humans do not have genuine freedom of choice.

Friedrich Nietzsche argued that the meaning of life is to create one's own values and live authentically. He believed that traditional values and beliefs are often oppressive and that individuals should reject them in order to live a life of their own choosing.