What is the main idea of this final couplet from shakespeare's sonnet 29

The answer is; The speaker thinks about his loved one and how he is happy to be himself.

squash

explanation:

onto a large boat, and mark the water level that the boat sinks to. then, take the elephant out and put a bunch of marked weights onto the boat until it reaches the same water level. add up the masses of the weights to get the weight of the elephant.