An eminent and erudite scholar
La Homa Lingvo (The Human Language): "Dated Liverpool, May 24th, 1926, [Collinson's] ... book is a thorough approach to the phenomenon of human language drawing on the most advanced achievements of his time, using data from Jespersen, Sapir and De Saussure. It is not only elegantly written in Esperanto, but uses Esperanto as one of its object languages in the many examples Collinson needs to illustrate his ideas."
Jansen, W. (2012). Basque and Esperanto: what we can learn from comparing the incomparable? Presentation given at the University of Liverpool, 25 April 2012.