"Turn of the Century". It's about a sculptor whose lover dies, and he works himself to starvation to complete a statue to her memory.
After much chaos from its first three quarters, "The Gates of Delirium" ends with the eerily beautiful "Soon", a ray of light from the bloody imagery from the previous sections.
"South Side of the Sky", which deals with a expedition freezing to death. The middle section, with the vocal harmonies and Rick Wakeman's piano work, has been described by Yes historian Bill Martin as "the gates of heaven opening for the explorers"....which is a pretty apt description.
From their 1969 self titled debut, we have "Harold Land", the story of a cheerful young man who goes off to war, only to come back emotionally scarred from the ordeal.
The "I get up, I get down" segment of "Close to the Edge".