...is another's modus tollens.
[W]hen I was nine years old, I came down with scarlet fever. [...] During that year there was nothing in the world which I wanted so much as a bicycle. My father assured me that when I got well I would get one but, childlike, I interpreted this as meaning that I was not going to get well.
Julia Robinson, in: Constance Reid, The Autobiography of Julia Robinson. The College Mathematics Journal, Vol. 17, No. 1, (1986), pp. 3-21
Jan Zygmunt and Robert Purdy have a paper ("Adolf Lindenbaum: Notes on his Life, with Bibliography and Selected References", open access) in the latest issue of Logica Universalis detailing what little is known about the life of Adolf Lindenbaum (1904-1941). It includes a complete bibliography of Lindenbaum's own publications and public lectures, as well as a bibliography of articles in which results are credited to Lindenbaum. Another paper on Lindenbaum's mathematical contributions is in