In praise of Professor Lotfi Zadeh

It scarcely seems possible that professor lotfi zadeh is 90 years old, and that i have known him for 49 years. since 1961, every time i meet him, he never seems to age in his uniform of black dress pants and hounds-tooth checkered sports coat. of course, he himself has humorously and self- deprecatingly characterized that once you sank to the lowest point, you cannot age anymore. i prefer to think of him as ageless and forever generous, especially with young scholars.