Razor syntax error "Only assignment, call, increment, decrement, await, and new object expressions can be used as a statement"

I m declaring the following syntax in MVC Razor view:

 @{
    foreach (var speaker in Model)
    {
       speaker.Name;               
    }           
 }

and getting error

Only assignment, call, increment, decrement, await, and new object expressions can be used as a statement

I am able to correct by adding a @ with speaker.Name;

but why it is ? I m sorry, I'm new to Razor but while I'm in code block @ {} why I am required to use @ again. Even I m not mixing it with HTML ?

Help please.