Image property and authorship

About legal issue, I want to use pictures for my blog - i am not getting any money with the blog.
If I found a picture on google search and I use on my blog, it is bad.
But what if i say below where i found it… Is it still bad, i am not stealing anyone, right?

Unless the picture specifically states that you may reproduce it on your site, then using it without permission is wrong. Contact the owner of the image and ask their permission. They may say yes, in which case you can use it with a clear conscience and not have to worry.