Brahman (Divinity) cannot be comprehended by means of proofs or arguments. It is beyond reason and calculation. It is indefinable, cannot be pronounced as being such or so, for this reason or that. It is immeasurable (aprameya) by time and space. The usual evidences for truth are direct perception (pratyaksha) and inferential perception (anumaana). But Brahman cannot be cognized by these two means. The sages experienced it and expressed this in the scriptures, and these Holy Texts themselves are the proof. The Word orShabdha is the firmest testament for the existence of Brahman.