The 4 Opposite Pairs (The 8 Core Emotions)
Joy / Sadness

Anger / Fear

Trust / Disgust

Surprise / Anticipation

How Emotions Branch and Intersect
In this theory, emotions diversify in two ways: through intensity and blending.

1. By Intensity (From weak to strong)
Each primary emotion has different degrees. For example:

Sadness: Starts as Pensiveness → turns into Sadness → intensifies into Grief.

Anger: Starts as Annoyance → turns into Anger → intensifies into Rage.

2. Complex Emotions (Blending)
When two core emotions overlap, a completely new secondary feeling is born:

Joy + Trust = Love

Anger + Disgust = Contempt

Fear + Surprise = Awe

Anticipation + Joy = Optimism

Sadness + Disgust = Remorse