法界次第初門 3.65

3.65

四、如虛空。如虛空者，虛空但為有名而無實法，虛空非可見，遠視故眼光轉見彯色。諸法亦如是，空無所有，人遠無漏實智慧故，棄實見彼我、男女、屋舍種種物。若修空觀，入實相理，則一切皆無所有，故說如虛空也。

Fourth, like open space. 'Like open space' means that open space exists merely as a name without real substance; open space cannot be seen, but looking from afar, the visual faculty shifts to see a light blue color. All dharmas are also like this: empty, having nothing whatsoever. Because people are far from untainted true wisdom, they discard reality and perceive self and other, male and female, houses, and various things. If one cultivates the contemplation of emptiness and enters the principle of the true nature [of reality], then everything is completely non-existent; therefore, it is said to be like open space.