Yeats' Lapis Lazuli

I had to do a little research with this poem to figure out exactly what a Lapis Lazuli was and why Yeats would use it to title his poem. Once I learnt about the blue stone I could somewhat connect it's meaning to the poem. Like the the dark blue stone, there's a sense of cold and dreariness in this poem. Yeats opens it by talking about the women who say they are sick of poets who are always happy when it's such a dark period of time. I really liked Yeats answer for these women in saying that life is like a play and we're all performing our parts. It's almost like when you're a child and your parents tell you that life isn't fair, and it reaches to a relatable aspect of human nature. It's hard to maintain a positive outlook when there's so much negative around and Yeats wants the reader to see that art is a means of achieving positivity.