Sonnet 116 is an attempt by Shakespeare to persuade the reader (and the object of his love) of the indestructible qualities of true love, which never changes.
The main theme of this sonnet, like so many of Shakespeare's sonnets, is love. In the poem, he is talking about the constancy and permanency of love. In this sonnet, Shakespeare talks about how love does not change. He says love does not change depending on the circumstances.
