The planet Neptune was in the sign of Gemini from 1887 to 1902. It's important to note that Neptune takes about 164 years to make a complete cycle, spending about thirteen years in each sign, and therefore the interpretation applies to a generation rather than the individual. For a more individual interpretation you need to look at the house position of Neptune in your chart. The generation of Neptune in the sign of Gemini has the ability to channel and spread ideas of compassion and tolerance throughout society. The art of communication is elevated to a higher cause. This may be reflected in new movements of Poetry and Literature. The negative aspect of Neptune in Gemini is confused thinking.