Object.class_eval do
  def self; self end
  
  def metaclass &block
    (class << self; self; end)
  end
  def metaclass_eval &block
    metaclass.class_eval(&block)
    self
  end
  
  def respond_to method, *args
    respond_to?(method) ? send(method, *args) : nil
  end

  public :extend
#  def copy
#    Marshal.load(Marshal.dump self) # Stub
#  end
end