How does Tennyson bring mental pessimism and Victorian optimism in his use of myths and legends?

"And we are here as on a darkling plain Swept with confused alarms of struggle and flight, Where ignorant armies clash by night." [Dover Beach: Mathew Arnold] "The year is at the spring And day is at the morn, … God's in heaven, All is right with world." [Pippa Passes: Robert Browning] These above quoted two quotations are from two renowned poets of Victorian arena show the contrast attitudes to their time. Browning is very …

…that the age of Tennyson is full of people like Paris, who may bring disaster any time, which is not desired. So, Tennyson waits foe man of self-reverence, self-knowledge and self-control. Finally we may say that in a superb way Tennyson has interlinked the myths and legends with his own sorrows or pessimism and the optimism of his age due to modern inventions, new explorations and advancement of trades and commerce. These are plainly praiseworthy.