Thought

Thought was the process of the mind thinking, or having an idea. The primate cortex was the segment of the brain responsible for thought. (PROSE: Time and the Rani)

Dr. Who, akin to "Pan of old", had a pipe in which he played tunes on to help him think and get his thoughts straight. (PROSE: )

The speed at which thought travelled, the speed of thought, equalled the speed of light. (PROSE: The Sands of Time)

Historians who had been allowed access to the "Monster Vaults" of the databanks in the Doctor's TARDIS observed that Abzorbaloffs sought the thoughts and experiences of other lifeforms as their own thoughts and experiences were "profoundly dreary". (PROSE: The Monster Vault) Upon being absorbed by "Victor Kennedy, Ursula Blake found that she could read his thoughts, learning that he intended to absorb Elton Pope after her. (TV: Love & Monsters)