In the prologue of Frankenstein, what evidence does Walton provide of his Romantic yearnings?Frankenstein by Mary Shelley

Certainly, in the expression of his letters and in
Walton's determination to act as an individual, readers identify the Romantic soul in
the man.  He first writes of his feelings about the
Artic,

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Inspirited by this wind of promise, my day dreams
become more ferven and vivid, I try in vain to be persuaded that the pole is the seat of
frost and desolation; it ever presents itself to my imagination as the region of beauty
and delight.

This love of
nature permeates Walton's letters as does his desire, his dream, to strike out as an
individual. In addition, Walton remarks upon his earlier desire to be a poet, and poetry
was regarded by the Romantics as the highest form of
literature,

I
also became a poet, and for one year lived in a Paradise of my own creation; I imagined
that I also might obtain a niche in the temple where the names of Homer and Shakespeare
are consecrated.

However,
when he failed at poetry, he turned to science and went out on several expeditions to
the North Sea where he became enchanted with the
Artic.  

In his second letter to his sister Margaret,
Walton expresses another Romantic idea, the importance of friendship.  For the Romantics
the friendship between two men was viewed as the most perfect of loves.  And, it is for
this communication of feeling that Walton yearns.

He does,
however, express his feelings well to his sister--poetically, in fact.  for he tells his
sister that he is going to "unexplored regions, to 'land of mist and snow.'"  He alludes
to the "Ancient Mariner"; and he explains that there is something at work in his soul
which he cannot understand. Yet, he ventures forth,

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What can stop the determined heart and resolved
will of man?

My swelling heart involuntarily pours itself
out thus....

Romantic
yearnings propel Walton toward the Artic Sea and adventure.