The marks of the dharma are spoken of by the Tathagata as no marks of the dharma; therefore they are called the marks of the dharma. They are merely given a false name.

The Vajra Sūtra expresses prajña, the wonderful principle of true emptiness, and also expresses the dharma door of equality found within the wonderful principle of prajña. In general there are Five Aspects of Equality evident in the sūtra.

1. The equality of living beings and Buddhas,
2. The equality of emptiness and existence,
3. The equality of all dharma,
4. The equality of one and many,
5. The equality of all views.

Most people do not understand equality dharma doors, so they put a head on top of a head, add marks to marks, and change what is basically equal to what is unequal.