The first line in the passage you quote from Wordsworth's "Tintern Abbey" ("...Of kindness and of love....") is the last line of the previous line of thought in the poem. This first line concludes the idea that the speaker's reflections on the natural scene in this setting--the first time he was there five years ago--inspired in him acts of kindness and of love. This in itself is romantic. Romantic poets like Wordsworth believed in communing with nature, connecting intuitively with nature, learning from nature. Connecting with that which is beyond human understanding (the transcendent) through intuition and imagination was central to Romanticism.
The rest of the passage takes this idea a step further. Wordsworth is speaking of the sublime, an experience with nature that is transforming, awe inspiring. This experience creates in him a mood in which his mere human body becomes a living soul. He is transformed by his connection with awe-inspiring nature, until he can see into the life of things.
This is, indeed, a poem featuring important elements of what we today call Romanticism.