If it's just a section from someones post then highlight the words/sentence and choose copy.
Come back to the thread that you are currently in and in the message box right click your mouse and choose paste, then place quote marks at the front/end
Alienware 17 R4 2017 review
These brilliant Lego posters show just what children's imaginations are capable of
Mac power user tips and hidden tricks
Comment réinitialiser votre PC, ordinateur portable ou tablette Windows ?