The speaker names the things that give them hope, and the list is delightfully odd. First comes a well-dressed society man swinging a sword at the clouds. It's a comic picture: he is elegant and a little absurd, fighting something he can't possibly wound. Yet the speaker finds hope in him, perhaps because he refuses to be intimidated by something so vast and grey.
The second image softens the mood. Fine ladies listen with pleasure to a gardener, and the pleasure seems to carry them "all the way to the moon." The title, "High class," plays on this, since these people are high in rank, but the poem also lifts them literally upward. Judging by the imagery, the speaker enjoys the way social lines blur: a gardener's talk can enchant refined listeners. The mood is light, whimsical and quietly affectionate, with a gentle sense that small, silly or humble gestures can still lift us.