Socrates, the Athenian philosopher, is widely recognized for his teachings on ethics, virtue, and the pursuit of knowledge.

Laozi, the founder of Taoism, taught about the concept of wu wei (non-action) and the balance between yin and yang.

Euclid, the Greek mathematician, is famous for his work on geometry, particularly his treatise 'Elements', which laid the foundation for Euclidean geometry.

Buddha, the founder of Buddhism, taught about the Four Noble Truths and the path to enlightenment, emphasizing non-violence, compassion, and mindfulness.

Avicenna, also known as Ibn Sina, was a Persian physician, philosopher, and scientist who made significant contributions to medicine, astronomy, and mathematics.

Aristotle, the Greek philosopher, introduced the concept of the 'golden mean', advocating for moderation and balance in all aspects of life.

Sun Tzu, the Chinese military strategist, is renowned for his book 'The Art of War', which provides insights into military strategy and tactics.

Plato, the Greek philosopher, established the Academy, a school of philosophy where he taught and engaged in philosophical discussions.

Aryabhata, the Indian mathematician and astronomer, made significant contributions to trigonometry and calculus, including the development of sine and cosine functions.

Plato, the Greek philosopher, introduced the concept of the 'divided line' and the 'allegory of the cave', which explore the nature of reality and knowledge.

Omar Khayyam, the Persian poet and philosopher, is renowned for his collection of poems 'Rubaiyat', which explores themes of life, death, and the pursuit of knowledge.

Socrates, the Greek philosopher, stressed the significance of self-knowledge, ethical living, and the pursuit of virtue.

Sima Qian, the Chinese philosopher and historian, is renowned for his work 'Records of the Grand Historian', which provides a comprehensive account of Chinese history.

Patanjali, the ancient Indian teacher, is known for his work on yoga and meditation, particularly his 'Yoga Sutras', which outline the eight limbs of yoga.

Aristotle, the Greek philosopher, made significant contributions to logic and syllogistic reasoning, developing a system of formal logic that is still studied today.