Do not go gentle into that good night

The meaning in this poem is to don't give up on yourself and specially your life.The mood that creates is a brave and kind of scared voice because the poet doesn't want the old man to be dead.He is kind of furious because he doesn't want the old men to give up on his life.He is repeating ,"do not go gentle into that good night" because that is the meaning of the poem,that is what he wants to tell his father.Another poetic device is that he uses simile.For example,blind eyes cold blaze like meteors and be gay.The poet means that the eyes are thinking.This is a great poem.