walking encyclopedia

As a "professor" I always felt myself a sham, with its chief duties of being a walking encyclopedia of erudition.

He knew precisely what she would say; Ann was a kind of walking encyclopedia of the conventions.

A walking encyclopedia cannot work for want of room to turn round in his own head.

I found her most intelligent and so far as my career on and off the stage was concerned she was a walking encyclopedia.

Blind Tom's memory was a blank on most subjects, but he was a walking encyclopedia on music.