In the calm morning before a long day of activities, and spurred by discussions with some first-year graduate students here at SMU, I seek knowledge and maybe a little comfort in the pages of Serge Lang's "Calculus of Several Variables" book. #NotKidding #FacultyLife https://twitter.com/drsekula/status/977160421487599617/photo/1 https://chirp.cooleysekula.net/attachment/49221