We must not conflate the corrupt ideology of the day with the permanent things (to use another phrase of Russell Kirk’s). “Do not let all kinds of strange teachings lead you from the right,” we read in Hebrews (13:9; Eph. 4:14-15). But there, precisely, is the rub. Rarely do we read Hebrews or Veritatis Splendor ; rarely do we see such conviction championed at and by our Catholic colleges; rarely (if ever) do we hear such foundational understanding at the heart of our weak-kneed Catholic politicians, pundits, and professors. They are, it seems, much too busy being true to themselves. They do not know who they are; neither do they know whose (1 Cor. 7:19, Rom. 14:8) they are.
I can say with an example: Animal, Human, car etc. Here Animal, Human, car considered as Class, Now consider Dog: Here Dog considered as Object, who is under Animal class. If we consider a dog, then its state are - name, breed, color, and the behavior are - barking,Eating, running, Sleeping. Now we can say, A class is a blue print of Animal class from which individual object is created. Here barking(), running(), eating(),Sleeping() etc. are method of the particular Dog object. I think it will be little easier to understand the difference between Class and object.