Help me to get my head around this code please!

    class Speech
        def initialize
            print "What is the speech name? " #Ask for the title.
            @title = gets.chomp #Get the title
            @lines = []         #Make @lines an empty array
            while add_line
                puts "Line added."
            end
        end

        def title
            @title
        end

        def add_line
            puts "Add a line: (blank line to exit)" #Ask for a line.
            line = gets.chomp   #get the line
            if line.length > 0  #if line greater than 0 characters long
                @lines.push line #put the line into the @lines array
                return line #final value is 'line'
            else
                return nil
            end
        end

        def each(&block)
            @lines.each { |line| yield line}
        end
    end

    speech=Speech.new #Assigns a new instance of the class, 'Speech', to a variable called 'speech'.

    speech.each do |var|
        puts "[#{speech.title}] #{var}" #Can't access @title directly, but I don't know why exactly. Have to use the title method to access it. Instance variables (which is what it is) are accessible throughout your class, so not outside your class. But why am I able to access the METHOD that's inside that class? Well, I have in my notes that methods are Public by default, so maybe that's why it's accessible from here.
    end