Slogan by Konrad Voelkel
http://stacks.math.columbia.edu/tag/04XS#comment-882
Slogan by Konrad Voelkel
http://stacks.math.columbia.edu/tag/01AO#comment-884
Slogan by Konrad Voelkel
http://stacks.math.columbia.edu/tag/08NR#comment-885
Fix typo and add slogan

Thanks to Konrad Voelkel
http://stacks.math.columbia.edu/tag/034K#comment-886