The Kalevala (the Land of Heroes) relates the ever-varying contests between the Finns and the “darksome Laplanders”, just as the Iliad relates the contests between the Greeks and the Trojans. Castren is of the opinion that the enmity between the Finns and the Lapps was sung long before the Finns had left their Asiatic birth-place.
A deeper and more esoteric meaning of the Kalevala, however, points to a contest between Light and Darkness, Good and Evil; the Finns representing the Light and the Good, and the Lapps, the Darkness and the Evil. Like the Niebelungs, the heroes of the Finns woo for brides the beauteous maidens of the North; and the similarity is rendered still more striking by their frequent inroads into the country of the Lapps, in order to possess themselves of the envied treasure of Lapland, the mysterious Sampo, evidently the Golden Fleece of the Argonautic expedition. Curiously enough public opinion is often expressed in the runes, in the words of an infant; often too the unexpected is introduced after the manner of the Greek dramas, by a young child, or an old man.
The whole poem is replete with the most fascinating folk-lore about the mysteries of nature, the origin of things, the enigmas of human tears, and, true to the character of a national epic, it represents not only the poetry, but the entire wisdom and accumulated experience of a nation. Among others, there is a profoundly philosophical trait in the poem, indicative of a deep insight into the workings of the human mind, and into the forces of nature. Whenever one of the heroes of the Kalevala wishes to overcome the aggressive power of an evil force, as a wound, a disease, a ferocious beast, or a venomous serpent, he achieves his purpose by chanting the origin of the inimical force. The thought underlying this idea evidently is that all evil could be obviated had we but the knowledge of whence and how it came.