Here's a breakdown:
* He is a viewer: The speaker is looking at the urn, appreciating its beauty and the artistic skill of its creation.
* He is a reader: The speaker is interpreting the imagery on the urn, reading the stories it tells and drawing conclusions about the lives of the figures depicted.
* He is a philosopher: The speaker is pondering the themes of beauty, art, time, and mortality as they are presented through the urn.
* He is a poet: The speaker is expressing his own thoughts and feelings about the urn through the language of the poem.
The speaker doesn't physically interact with the urn. He is engrossed in the imaginative world the urn presents, contemplating its meaning and beauty.