Final answer:
The phrase 'I have but one lamp by which my feet are guided' means that the person only has one source of guidance or direction in their life.
Step-by-step explanation:
The phrase “I have but one lamp by which my feet are guided” is a metaphorical expression. It means that the person only has one source of guidance or direction in their life. The lamp represents knowledge, wisdom, or a guiding principle that helps the person navigate through life.
Just like a physical lamp illuminates the darkness and allows one to see clearly, the metaphorical lamp provides clarity and guidance in making decisions and pursuing one’s goals. The person is emphasizing the significance of this guiding light in their life, suggesting that it plays a crucial role in their journey.