The planet Neptune was in the sign of Sagittarius from 1970 to 1984. 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. Both the sign of Sagittarius and the planet Neptune lead towards the pursuit of spiritual ideals. This generation will hunger for knowledge and meaning. This search will take them to foreign lands and cultures. They will bring back and implement these ideas in their own cultures. Ideas such as Yoga, Meditation and Buddhist ideas began to take root in Western Society during these years. The shadow side of Neptune in Pisces is the following of cults or misguided leaders without a healthy sceptisicm of what they are preaching.