In Poetry, the Bard's inpired heart,
Reveals its feelings in a wordy way;
Adhering to the basic rules of art,
And making life delightful everyday.

At times, ‘tis wholly the play of our mind;
Sometimes, an exercise of word-painting;
Good things in it, the readers always find,
That helps to live better by God-loving.

And Poetry must stand the test of time;
The best way 'tis to depict life as such;
And suggests ways to make it more sublime;
Affording readers with a magic-touch.

Yet, Poetry must reign supreme for long,
Tho' change with times just like a modern song.

Dr John Celes

http://www.poemhunter.com/poem/sonnet-functions-of-poetry/