Final answer:
Stoicism is a Greek philosophy that is greatly similar to Buddhism, as both emphasize the search for internal peace and contentment.
Step-by-step explanation:
Ancient Greek philosophy and Buddhism share some similarities in their philosophical concepts and approaches. One Greek philosophy that is greatly similar to Buddhism is Stoicism. Stoicism emphasizes the search for internal peace and contentment, similar to the Buddhist goal of achieving inner peace and enlightenment. Both philosophies view philosophy as a practical way of life rather than just a theoretical activity.