Directions: The passage given below is followed by four alternative summaries. Choose the option that best captures the essence of the passage. Key in the number of the option you choose as your answer.
Socrates equated knowledge with virtue, which ultimately leads to ethical conduct. He believed that the only life worth living was one that was rigorously examined. He looked for principles and actions that were worth living by, creating an ethical base upon which decisions should be made. Socrates firmly believed that knowledge and understanding of virtue, or "the good," was sufficient for someone to be happy. To him, knowledge of the good was almost akin to an enlightened state. He believed that no person could willingly choose to do something harmful or negative if they were fully aware of the value of life.