Describe the character traits of the speaker in "Two Tramps in Mud Time" by Robert Frost.

In the classic poem "Two Tramps in Mud Time" by Robert Frost, two unemployed lumberjacks come across the narrator chopping wood on a cool spring day. One of the tramps stops and watches, obviously hoping to take over the wood-chopping job and get paid for it.
The speaker seems to be an artist, a poet, or a writer—possibly Frost himself. Although he acknowledges that the tramp has the financial need to chop wood, he is unwilling to hand the work over to him because he is doing it for a greater purpose. He says:

My object in living is to unite my avocation and my vocation.

An avocation is a hobby or some secondary work that a person does in addition to his primary job. A vocation is a career that a person feels strongly motivated to follow. In desiring to unite these two, the speaker shows great depth of character. Rather than simply work for money, he wants his "life of self-control" to encompass all facets of existence, including the seemingly unimportant. In this, his concept of the wood-chopping labor goes far beyond that of the tramp, who sees in it only a way to make money.
The middle stanzas of the poem back up the obvious depth of the narrator's character. While chopping the wood, he not only relishes the physical exercise, but he observes the beautiful and changeable aspects of nature around him. He comments on the warm sun but chill wind of the spring day. He sees a bluebird and hears its song. He notices the effect of water upon the landscape.
In conclusion, the character of the speaker is more profound than that of the tramps's because he chops wood out of love, "for Heaven and the future's sakes," rather than for mere pecuniary profit.