Index Animi Sermo
Defined in 4 dictionaries — Cyclopedic (1922), Ballentine's (1916), Black's (1910), Kinney (1893)
The Cyclopedic Law Dictionary
Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922
Speech is the index of the mind.
Ballentine's Law Dictionary
James A. Ballentine · 1916
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
Language is the exponent of the intention. The language of a statute or instrument is the best guide to the intention. Broom, Max. 622.
A Law Dictionary and Glossary
George C. Kinney · 1893
I. Speech is the index of the mind or thought; language is the exponent of intention.