Just follow these steps from a terminal and possibly first uninstall the version you have previously installed.
[size=medium]If your system is 32-bit:[/size]
We unloaded the packages, unzip and install with the following commands:
$ wget -c download.documentfoundation.org/libreoffice/stable/4.1.4/deb/x86/LibreOffice_4.1.4_Linux_x86_deb.tar.gz
$ tar -xzvf LibreOffice_4.1.4_Linux_x86_deb.tar.gz
$ cd LibreOffice_4.1.4.2_Linux_x86_deb/DEBS
$ sudo dpkg -i *.deb
[size=medium]If your system is 64-bit:[/size]
We unloaded the packages, unzip and install with the following commands:
$ wget -c download.documentfoundation.org/libreoffice/stable/4.1.4/deb/x86_64/LibreOffice_4.1.4_Linux_x86-64_deb.tar.gz
$ tar -xzvf LibreOffice_4.1.4_Linux_x86-64_deb.tar.gz
$ cd LibreOffice_4.1.4.2_Linux_x86-64_deb/DEBS
$ sudo dpkg -i *.deb