All thoughts are illusory. Mind is the original self of all things in the universe. In the Buddhist Sutra 法句經 The Dhamapada Sutra, it says, ‘Mind is the origin of all things. Mind is their chief; they are all mind-made 心為法本，心尊心使.’ So without mind, all things disappear. The mind is the original self of all things. There is only one True mind, but not two.
In the Buddhist sutra The Avatamsaka Sutra 華嚴經, it says, ‘All Buddhas share one Dharma body一切诸佛身，唯是一法身.’ The Dharma body is the self-nature. The dharma body is the True Mind. The mind that all Buddhas talk about is this one mind. Sakyamuni Buddha likened the True Mind to the ocean. The minds of all beings (including our own) are like bubbles in the ocean. The ocean is one, but there are infinite bubbles in the ocean.