Sonnet 103 by Shakespeare

Sonnet 103 is one of 154 sonnets written by the English playwright and poet William Shakespeare. It's a member of the Fair Youth sequence, in which the poet expresses his love towards a young man.

Synopsis
The poet says that his feeble lines cannot do justice to the subject's beauty, but merely mar it with their own inadequacy. The poet's only achievements are the result of that beauty, which is much more clearly visible simply by looking in a mirror.