A sonnet is a type of poem that was originated in Italy. A poet named Giacomo Da Lentini invented it. The word sonnet is from the Italian word sonetto which means little song. In the thirteenth century until now it is known as a poem with fourteen lines. It also as a strict rhyme scheme. And a specific structure as well.
Milton! thou shouldst be living at this hour:
England hath need of thee:
she is a fanofstagnant waters:
altar, sword, and pen,Fireside, the heroic wealth of hall and bower,
Have forfeited their ancient English dowerOf inward happiness.
We are selfish men;Oh! raise us up, return to us again;
And give us manners, virtue, freedom, power.
Thy soul was like a Star, and dwelt apart;
Thou hadst a voice whose sound was like the sea:
Pure as the naked heavens, majestic, free,
So didst thou travel on life's common way,
In cheerful godliness; and yet thy heart
The lowliest duties on herself did lay.