Up to 1848 he was closely connected with politics, the theatre and the school - he was the successor to Lazar; he wrote grammars, and the introductions to his grammars are models of lucidity, combined with a wide historical view.
In beauty, richness and lucidity of language, and in dignity of style, these two books resemble the Bible of 1688.
He introduced into the Danish literature of his time inestimable elements of lucidity and purity.
The clearness, elegance and originality of his mode of presentation give lucidity to what is obscure, novelty to what is familiar, and simplicity to what is abstruse.
The careful industry and the lucidity which characterize Mr Theal's work stamp him as a historian of whom South Africa may well be proud.