Human emotions and physiognomy.
Physiognomic image and hexagram Yih-King 21.

emotions of a human face and generation of energy

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Lineaments of a face and perception of a time.
Eyebrows: ideas are in the future / infinite chronology of subjective human comprehensions.
Eyes: aspirations are in the future / infinite chronology of subjective human achievements.
Mouth: events are in the past / inevitably final chronology of subjective human actions.

Person is directed to the future and ideas follow movement of time but the past slows movement.

Analytical formulas of the canon of changes.
1 (eyebrows) affirmative thinking is (mouth) uncorroborated evidence of (eyes) convinced existence.
2
(eyebrows) doubtless reminiscences are (eyes) arising displays of (mouth) denied past.
3
(mouth) negative assumptions are (eyebrows) intentional projections of (eyes) predictable future.

The sixth world category is energy.
Joyful emotions of a human face can be compared with generation of energy or extension in physical sizes of energetic potential. Sad facial emotions can be compared to disappearance of energy or reduction of existing energetic potential. Open emotions can be compared with maximal sizes of energy. Quiet emotional displays of a face can be associated with absence of energy or otherwise to tell negative sizes of energetic potential.
The listed serial numbers of world categories are conditional.
Look general information on global or fundamental world categories on pages of this website in section which has the name divine categories, and also in other sections of this web resource.

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Following 22 facial image in gallery.
About physical sizes of energetic potential and generation of emotional displays, and also kinetic energy of emotions.