Connecting two complete sentences with a comma

[vcolts]

Ex:

"Happiness is not a destination, it's a journey."


The above connects two complete sentences with a comma. I am assuming that it's grammatically wrong (strictly formal writing wise?).

[JohnParis]

You can make two separate sentences or use a semicolon (;).
* Use a semicolon when you want to make a bond between two statements, typically when they are related to or contrast with one another


Here is a great explanation by Todl
http://www.usingenglish.com/forum/as...l-clauses.html


John