The theme and tone of the poem "Love's Philososphy" by Percy Shelley are two separate, but linked, concepts. The themes of the poem are rejection, love, union and disappointment as they can be beautifully represented through Nature. Because of the themes (particularly rejection and disappointentment in love) the poem has a poignant plaintiff air - the poet feels rejected, hurt and hard done by. Shelley feels he is the victim in this situation and the love he feels for another is unwanted and unrequited. The poem is reminiscent of John Donne's "The Flea" where the conceit is to argue for loving physical union by pointing out that the lovers' blood is already one - united in the body of the flea. Here though, Shelley uses images from Nature (winds and seas uniting) to make his point to his love.
The thoughts which the word "God" suggests to the human mind are susceptible of as many variations as human minds themselves. The Stoic, the Platonist, and the Epicurean, the Polytheist, the Dualist, and the Trinitarian, differ infinitely in their conceptions of its meaning. They agree only in considering it the most awful and most venerable of names, as a common term devised to express all of mystery, or majesty, or power, which the invisible world contains. And not only has every sect distinct conceptions of the application of this name, but scarcely two individuals of the same sect, who exercise in any degree the freedom of their judgment, or yield themselves with any candour of feeling to the influences of the visible world, find perfect coincidence of opinion to exist between them.