C# deep copy object

deep-copy-object.cs

// the idea from http://www.agiledeveloper.com/articles/cloning072002.htm

using System;

namespace ConsoleApp1
{
    class Program
    {
        public class Person : ICloneable
        {
            private Brain _brain;
            private int _age;

            public Person(Brain brain, int age)
            {
                _brain = brain;
                _age = age;
            }

            protected Person(Person another)
            {
                Brain refBrain = null;
                try
                {
                    refBrain = (Brain)another._brain.Clone();
                }
                catch (Exception e)
                {

                }
                _brain = refBrain;
                _age = another._age;
            }

            public override string ToString()
            {
                return "This is person with " + _brain;
            }

            public virtual object Clone()
            {
                return new Person(this);
            }
        }

        public class SkilledPerson : Person
        {
            private String theSkills;

            public SkilledPerson(Brain brain, int age, string skills) : base(brain, age)
            {
                theSkills = skills;
            }

            protected SkilledPerson(SkilledPerson another) : base(another)
            {
                theSkills = another.theSkills;
            }

            public override object Clone()
            {
                return new SkilledPerson(this);
            }

            public override string ToString()
            {
                return "SkilledPerson: " + base.ToString();
            }
        }

        public class Brain : ICloneable
        {
            public Brain()
            {

            }

            protected Brain(Brain another)
            {
            }

            public virtual object Clone()
            {
                return new Brain(this);
            }
        }

        public class SmarteBrain : Brain
        {
            public SmarteBrain() { }

            protected SmarteBrain(SmarteBrain another) : base(another)
            {

            }

            public override object Clone()
            {
                return new SmarteBrain(this);
            }
        }

        public static void play(Person p)
        {
            Person another = (Person)p.Clone();
            Console.WriteLine(p);
            Console.WriteLine(another);
        }

        static void Main(string[] args)
        {
            Person me = new Person(new Brain(), 12);
            play(me);
            SkilledPerson he = new SkilledPerson(new SmarteBrain(), 123, "Writer");
            play(he);
        }
    }
}