GITA

Sri Krishna Says in 2.62-63

” While contemplating the objects of the senses, a person develops attachment for them, and from such attachment lust develops, and from lust anger arises.
From anger, complete delusion arises, and from delusion bewilderment of memory. When memory is bewildered, intelligence is lost, and when intelligence is lost one falls down again into the material pool.”

In Star Wars Master Yoda tells Anakin Skywalker a very similar thing.

“Death is a natural part of life. Rejoice for those around you who transform into the Force. Mourn them do not. Miss them do not. Attachment leads to jealousy. The shadow of greed that is. Train yourself to let go of everything you fear to lose.”

“Fear is the path to the Dark Side. Fear leads to anger, anger leads to hate; hate leads to suffering. I sense much fear in you