Sōseki Natsume said this quote

That Seigo could go into geisha houses, accept luncheon invitations, drop in at the Club, see people off at Shimabashi, meet them at Yokohama, run out to Oiso to humor the elders—that he could put in his appearance at large gatherings from morning to evening without seeming either triumphant or dejected—this must be because he was thoroughly accustomed to this kind of life, thought Daisuke; it was probably like the jellyfish's floating in the sea and not finding it salty.