The five great elements have vibrations;
Each of the ten worlds has its language;
The six kinds of objects are expressive symbols;
The Dharmakaya Buddha is Reality.

Kobo Daishi, Kukai (774-835);
from "Shoji jisso gi" (The Meanings of Sound, Word, and Reality).
Taken from Kukai: Major Works, translation and accounts by Yoshito S. Hakeda,
Columbia University Press, New York, 1972.