Attached Link: http://www.symbols.com/index/wordindex-a.html

Here's a website for symbols that I've had in my favorites for eons...totally forgot about it until now. I didn't look to see if "truth" was there, or "mental illness" for that matter. But even if they aren't it's a nice reference if you work with a lot of symbolism. You can do a search either with a word or using a reverse search to find out what a symbol means that you've seen. Hope this helps. (The URL should take you to the word search)