The second line contributes to a tone of excitement and hope .
Explanation: As the title of the poem suggests ,the heart and the hand both are seemingly untamed .The second line begins with the aliteration and mentions about a 'fixed wild and wandering thought '.The poet describes both opposite reactions of being wild and untamed as against the thoughts being fixed.the thoughts being fixed is indicative of a better tomorrow which bring in lot of hope and excitement.
An expository essay is an essay in which the writer informs the reader about information. Like in your typical high school research papers. The method most commonly used when writing this type of essay is compare and contrast.