Thoughtform

From The Book of THoTH (Leaves of Wisdom)

A thoughtform, in esoteric philosophies such as Theosophical and New Age thought, is a non-material object created from a combination of willpower, "bioenergy" (i.e., chi or prana), and astral substance (sometimes referred to as "ether").

Thoughtforms are typically invisible, and can be perceived only through clairvoyant sight.

Thoughtforms are central to the practice of all forms of magick, where ritualization is utilized to focus the intent of either a sole practitioner or a group. The thoughtform can be willed to take on a specific appearance, or perform a specific function. A complex thoughtform which is anthropomorphic or zoomorphic in appearance is referred to as a tulpa.

An undisciplined individual, who does not even believe in magick (muggle), can unconsciously create a thoughtform in the event that a strong emotion (i.e., hatred, lust, love, sympathy, etc.) is directed at a specific person for an extended period of time.

Generally, a thoughtform will eventually deconstruct as it runs out of energy over time. This can be prevented through regular recharging sessions, or through a symbiotic link with either the creator or the target.

A meme is not a thoughtform.