Today marks the 18^th anniversary of the September 11 attacks, and people all over the world are pausing to remember the day.

Almost 3000 people lost their lives when two hijacked planes crashed into the twin towers of New York’s World Trade Center on 9/11, changing America forever.

A series of services will be carried out today to remember the dead as a mark of respect and to help those they left behind.

Here are some powerful 9/11 memorial quotes from world leaders, firefighters, survivors and the victims’ families that show how America rallied together after the country’s most devastating terrorist attack.

The quotes show why it’s so important to never forget  the lives lost on September 11 2001, 18 years on from the day.