Why does the speaker, not the author, of "I Find no Peace" feel the need to use paradoxes?

The speaker many paradoxes in this personal poem are the
expression of a person who cannot communicate all his feelings with the loved one. The
poem implies that the love may be forbidden in some way, or that the speaker has not yet
had the opportunity to speak extensively with the loved one. Presumably, in a courtship
in which the two lovers have unlimited freedom of expression, all the feelings might be
aired, but in a courtship hemmed in by custom and inhibition, the speaker’s expressions
seem perfectly natural.Wyatt shows great insight into personal character by placing the
paradoxes within the confines of a speaker/narrator, not merely narrator for a
more powerful expression of what it means to be constricted in some
way.