Socrates believed that the unexamined life is not worth living, as it is a life of ignorance and unawareness of one's true self and purpose.

The self is often understood as the subjective, conscious aspect of an individual's existence, encompassing their thoughts, feelings, and sense of identity.

René Descartes is known for his famous statement, 'Cogito, ergo sum' ('I think, therefore I am'), which he used as the foundation for his philosophical system.

Locke's theory of the self, known as 'tabula rasa,' posits that the mind is initially a blank slate and that knowledge and ideas are acquired through experiences and interactions with the world.

Plato's philosophy emphasizes the pursuit of knowledge as a means to attain the highest form of good, which he believed was the ultimate goal of human existence.

Self-knowledge encompasses a comprehensive understanding of one's own thoughts, feelings, strengths, weaknesses, biases, and limitations.

Socrates believed that self-knowledge was essential for achieving moral excellence and living a virtuous life.

Kant believed that the pursuit of knowledge is fundamentally motivated by the human desire to understand the truth and gain a deeper understanding of the world.

The Latin term 'cogito' means 'I think' and is central to Descartes' philosophical system, as he famously stated, 'Cogito, ergo sum' ('I think, therefore I am').

Plato's theory of Forms posits that true knowledge is the understanding of the eternal and unchanging Forms, which are the ultimate reality behind the physical world.

Locke's theory of the mind, known as 'tabula rasa,' posits that the mind is initially a blank slate and that knowledge and ideas are acquired through experiences and interactions with the world.

Aristotle believed that the pursuit of knowledge is a fundamental human desire and that it is part of our nature to seek understanding and wisdom.

Kant believed that human reason has inherent limitations and that there are certain things that are beyond our ability to know or understand.

Descartes' philosophical method, known as 'Cartesian doubt,' involves doubting everything that can be doubted in order to reach a foundation of certain knowledge.

Locke believed that the pursuit of knowledge is a fundamental human need and that it is essential for achieving happiness and fulfillment.