★ Jealousy is an annoyance at the good fortune of others. [Greece] Zeno, quoted from "The Words and Actions of Famous Philosophers" by Larsius

★ The so-called jealousy means that someone other than oneself occupies a superior position than oneself, or that something precious to oneself is taken away from oneself. The feeling that arises when someone else takes something away from you, or is about to be taken away from you.

★ This kind of emotion is a very intense emotion that desires to exclude others from their superior status, or wants to destroy others' superior status, and contains hatred.

★ To have such intense feelings that don’t necessarily show up immediately on the surface is jealousy. In situations that cause trouble, it is the tip of the iceberg. Many jealousies are hidden deep in people's hearts, fermenting the dark functions and exploding in a distorted form. [Japan] Takeshi Tsumugi: "The Psychology of Jealousy"

★ Being jealous of someone's abilities will lead to their loss. [China] Liu Zongyuan: "The Essay on the Corpse-Scanning Insect"

★ As long as anyone has the desire to improve the current situation and is unwilling to lose to others, jealousy will continue to occur throughout his life. [Japan] Takeshi Chimo: "The Psychology of Jealousy"

★ All educated people will eventually believe that jealousy is a manifestation of ignorance. [USA] Emerson: "Collected Essays, Volume 1"

★ Modern society is a society of competition and entanglement. Moreover, it also means that modern people live in a hotbed of jealousy. [Japan] Takeshi Chimo: "The Psychology of Jealousy"

★ A jealous person often looks for trouble, and this is his own enemy. [Ancient Greece] Democritus: "Fragments of Works"

★ Jealousy can make close friends fall out, and both parties will be hurt. It can be said that it is a helpless emotion, symbolizing It shows the weakness and ugly side of human nature.

[Japan] Takeshi Chimo: "The Psychology of Jealousy"