首楞嚴義疏注經 8.89

8.89

圓妙淨智無二邊之雜、無妄想之偽，故云純真。現用自在，故云發化。乃能融通習氣，唯一精真，以真精智進真淨行，故名精進。

The wondrously complete and pure wisdom is free from the mixture of the two extremes and the falsity of delusional thoughts; hence it is called 'purely real.' Its manifest function is free and sovereign; hence it says 'initiates transformation.' It can thereby harmonize habit energies so that they are solely one true essence. Advancing true and pure practices by means of this true and essential wisdom, it is therefore called vigour.