There is a myth going around SEO forums, namely to make sure “you save” your link juice and not have too many outbound links on your website.
Ever saw an authority site without outbound links? Open any big blog and you’ll have problems finding posts without links to other sites. Wikipedia has a bunch of links for every article.
It’s natural. It’s how the Internet is build.
However, that said, once you write a post and post links from it, the power of those links on that post depend on how many there are on that page. So, when you do have a link on your blog post, have one or two. But looking at your whole website, you want to have a large and diverse range of outbound links.
Here’s what our beloved Matt Cutts has to say: