public static function paths( $paths = null, $define = true )
	{
		if ( is_null( $paths ) )
		{
			return static::$paths;
		}
		
		foreach( $paths as $key => $path )
		{
			static::$paths[$key] = $path;
			
			if ( $define === true )
			{
				define( strtoupper( $key ).'PATH', $path );
			}
		}
	}