"A doubtful friend is worse than a certain enemy. Let a man be one thing or the other, and we then know how to meet him"

This quote by Aesop is highlighting the value of clearness and certainty in relationships. Aesop is suggesting that it is much better to have a specific opponent than a skeptical pal. A certain opponent is somebody whose intentions are clear and recognized, and therefore it is easier to prepare for and deal with them. A skeptical good friend, on the other hand, is someone whose intentions are unclear and unpredictable. This makes it tough to understand how to interact with them, as their behavior can be unforeseeable. Aesop is suggesting that it is much better to have a clear understanding of someone's intentions, whether they are a friend or an opponent, so that one can know how to satisfy them. This quote is a suggestion to be sincere and open in relationships, so that one can have clarity and certainty in their interactions.