Jean-Paul Sartre is known for his existentialist philosophy, which emphasizes the importance of individual freedom and choice in shaping one's existence.

Existentialism posits that humans are responsible for creating meaning in their lives and that this responsibility can be a source of anxiety.

Bad faith involves denying one's freedom and responsibility, adopting inauthentic values and beliefs, and逃避现实.

Existentialism encourages individuals to embrace their freedom and authenticity, rather than seeking happiness through external validation or societal conformity.

Aristotle believed that happiness is the ultimate goal of human life, and that it is achieved through living a virtuous and fulfilling life.

Epicurus' philosophy, known as Epicureanism, emphasizes the pursuit of pleasure and the avoidance of pain as the path to happiness.

The hedonic treadmill refers to the phenomenon where people tend to adapt to positive life changes quickly, leading to a return to their baseline level of happiness.

The genetics of happiness theory proposes that genetic factors play a role in determining an individual's subjective well-being.

Flow is a psychological state characterized by intense focus, engagement, and enjoyment in an activity.

Socrates famously stated that 'the unexamined life is not worth living,' emphasizing the importance of self-reflection and critical thinking.

Eudaimonia is a Greek term often translated as 'happiness' or 'flourishing,' and it refers to the realization of one's full potential and living a meaningful and fulfilling life.

Hegel believed that freedom is not simply the absence of constraints, but rather the recognition and acceptance of the necessary conditions of existence.

Negative liberty refers to the absence of external constraints or interference in one's actions.

Nietzsche's statement reflects his belief that true freedom involves embracing one's own unique path and values, even if they may seem unconventional or challenging.

Positive liberty refers to the freedom to act in accordance with one's own goals and values, and to have the resources and opportunities to do so.