Redefine "base" classes in rails

Hello All,

I have a little question on rails.
For instance, if I need to provide additional method to the Object
class (method that I could use in all the classes then), where can I
put this code:

class Object
def my_new_method_1
...
end
def my_new_method_2
...
end
end

I mean... can I add this in my_controlller.rb after the controller
class definition ? Can I put it anywhere next to a class definition?

Thanks a lot,
Luc