by John Marshall, Royal Naval Biography — Mangles… (1823)
“ Imbued with a laudable thirst for knowledge, and inspired with a love of science, when their own noble profession no longer claimed their exertions, they adventured forth in search of information in lands where it is most difficult of attainment. They found, as every one will find who engages in literary and scientific pursuits, increase of appetite grow with what it fed on ”
