Good cheap vegetarian protein source?

[Ted King]

I've been an ovo-lacto vegetarian for over 30 years. Ovo refers to eating of eggs and egg products and lacto refers to eating dairy products. It's pretty easy to get all the protein (amino acids) you need if you eat egg and especially dairy products - just don't get too carried away with cheese and/or ice cream. :-)

http://www.ivu.org/faq/definitions.html