Martin Farquhar Tupper (1848). “Gems from Tupper: Consisting of Extracts from the Following Works: Proverbial Philosophy; Thousand Lines; Twins; Hactenus; An Authr's Mind; Geraldine, and Other Poems; Heart; Crock of Gold; and Probabilities, an Aid to Faith”, p.60
Frederick William Robertson (1873). “ser. 1 God's revelation of heaven [and other sermons]. ser. 2 Christ's judgement respecting inheritance [and other sermons]. ser. 3 The tongue [and other sermons”, p.316