Summary
This quote suggests that one should be cautious when it comes to writing letters. It advises against writing letters unless absolutely necessary, implying that certain situations may be better resolved in person or through other means of communication. Additionally, it stresses the importance of not destroying letters, indicating that holding onto them may have value or significance, even if initially deemed unimportant. Overall, the quote implies the need for thoughtful consideration and preservation when it comes to letter-writing.