Wim is Professor Emeritus at the University of Amsterdam, where he held the Special Chair of Esperanto and Interlinguistics for 11 years. He has been the Buchanan lecturer for the past 5 years at the University of Liverpool. In addition to Esperanto and Interlinguistics, his research interests include Functional Discourse Grammar, Basque and Esperanto. He is the author of several publications relating to Basque, including a beginners textbook. He has also published in the field of comparative linguistics. He has recently finished helping the author of a two-way Basque-Esperanto dictionary, now published, and is currently preparing the bilingual publication of a large collection of Basque proverbs and sayings in Esperanto translation. He is a member of the Society of Dutch Literature.