Robert Frost while writing Design as his other entire poems he was seeking the result. He was searching for reality of the nature and the world.
He has used insects and the product of nature in his poem for many reasons. The most important reason is that he wanted his readers to find out the significant of God.
It is an indisputable and yet remarkable fact that many natural objects appear to have been designed for a purpose: the eye for seeing, the hand for grasping, etc.
The only reasonable explanation for this appearance of purpose is that natural things are ultimately the product of an immensely powerful supernatural intelligence, namely God.
Therefore, it is reasonable to believe is that God exists.
Generally, his poem explains how human beings are lost in explaining themselves. People are not aware of the creator, because we usually get fed up of searching for long while. Before knowing and understanding the nature and the ultimate creator of nature and human beings, we have to understand ourselves, which is a hard task to achieve. .
To give his ideas, Frost has used several insects. Each character (insect) symbolizes something. .
I found a dimpled spider, fat and white,.
On a white heal-all, holding up a moth.
Like a white piece of rigid satin cloth--.
Assorted characters of death and blight.
Mixed ready to begin the morning right,.
Like the ingredients of a witches' broth--.
A snow-drop spider, a flower like froth,.
And dead wings carried like a paper kite.
What had that flower to do with being white?.
The wayside blue and innocent heal-all?.
What brought the kindred spider to that height?.
Then steered the white moth thither in the night?.
What but design of darkness to appall?--If design govern in a thing so small.
Usually, the color white symbolizes goodness, purity, and innocence. The language of the poem suggests these connotative links: the spider is "dimpled" as well as "fat and white," like a newborn baby.