Looking over those pictures is strangely facinating... you see different photographer styles, posing choices, lighting, etc.
The clothes, the place, the role... they all remain unchanged. But I cannot help but think of how the student experience of this single man may have changed over time ... as students have changed and as the teacher himself has changed through the years.
"It's not a lie if you believe it." -- George Costanza
The whole problem with the world is that fools and fanatics are always so certain of themselves. --Bertrand Russel