What is the moral for the oxen and the axle tree?

The moral of "The Oxen and the Axle Tree" is that one should be cautious about taking on more than they can handle, as overburdening oneself can lead to failure or harm. It emphasizes the importance of balance and recognizing one's limits, illustrating that even strong individuals or groups can be brought down by excessive strain. This fable serves as a reminder to work within one’s capacity to avoid negative consequences.