The most essential part: Thinking
What is the most essential characteristic of Pisces? Kindness? Weakness? Gentleness? No, let me tell you, it's thinking.
Yes, all the characteristics of Pisces stem from their overthinking. Perhaps no other zodiac sign can better perceive others' psychology or analyze the essence of matters. You may call it sensitivity, but once this sensitivity is correctly applied, no one can learn about people as quickly as Pisces...