Display a paragraph in the index page that won't be displayed in the single post

Question

Can i make it possible for an excerpt to be displayed in the index page but that part of the excerpt will not be displayed in the single post anymore?

Answer 1

Certainly: use the "Excerpt" textarea on the Post Edit screen. It should be immediately beneath the "Content" textarea; if not, check Screen Options (tab in the upper right-hand corner), and ensure that the "Excerpt" checkbox is enabled/checked.