[JadeNB]

I think that is rather different. The traditional meaning of "proofs without words" is that the picture is the proof, or at least, if you believe that a proof can only be in words, that the picture should convey the idea so transparently that anyone with reasonable mathematical skill can routinely translate it into words.

[fiforpg]

You are correct, after posting I realized the difference. The book is rather "theorems [formulated] without words".

Which is why I added that the proofs are left to the reader :P