The layout of the ode looks complex. The ode is a complex form of poetry and it is lyrical because it deals with close feelings. The language used is complex too and charged with metaphors, there is a high density of this rhetorical figure.

The ode poses a philosophical problem: the poet reflects about his life and how his response to nature changed during his life.

The speaking voice is remembering a past moment in his life where being in a meadow, in a grove or a stream and on earth, he was in close, spontaneous and immediate relation with nature. Wordsworth uses a Synecdoche  using elements of nature (meadow, grove, and stream) to refer to whole nature.

This strong relation was made possible because of his young age.

According to Wordsworth, we have origin from God so when a baby is born he brings with him the memory of the blessed situation he lived in nearness to God.

When he's very young his emotional memories are higher and his response to nature is not mediated by reason.

As he grows up his emotional memory of God weakens, decreases, diminishes. To grow up means to forget the emotional response. The more he grows the less these memories are vivacious. To remember emotionally means to be conditioned by God. The farther from God the less he remembers his relation with the creator.

As Wordsworth reflects on his past life he understands that he is missing the close relation with nature, he has a nostalgic, an elegiac feeling. The statement "it is not now as it hath been yore" means the poet regrets his relation with God which does not exist anymore. Now he does not react as he did before. The poet knows the more a man grows the more he is distracted by other values and the less he is able to perceive beauty and nature which are a metaphor for God.

The poet is able to perceive nature with the sensitiveness of a child more than common men.

If you lose the ability to perceive nature and the relation with it you become incapable to write.