E.G. von Wald 
Fair and Warmer [EPUB ebook] 

Tensor’s melancholia threatened to disturb the entire citizenry, and that was most uncivil! So—if these peculiar aliens caused him this distress, by provoking his intellectual curiosity, the remedy was for him to investigate them to his complete satisfaction…. Thus, in this manner, did Tensor get well—and did he learn a bit too….