Link missing

would you please complet the following proverbs.
1)all is .... that comes to the .....
2)the best things are hard to ....
3)if you cannot .... never show your.....
4)better to ..... out than to ..... out.

1 - all is fish that comes to the net
3 - if you cannot bite never show your teeth
4 - better to wear out than to rust out

Here's a site with lots of proverbs, yet there's no answer for n °2 :

I filled the optional link box but it's not showing up. How do you do to add an active link to a post?

www.giga-usa.com/ gigaweb1/quotes2/qutopproverbsx001.htm