Power of punctuation

Punctuation plays a great role to give meaning for a sentence. Here is an example from Wikipedia:

Sentence1: "woman, without her man, is nothing"
Sentence2: "woman: without her, man is nothing"

Both of these sentences have the same words. However, the meanings of these two sentences are completely different ! What makes the meaning different ? The answer is the punctuations ! Thus, they are very powerful !