Struggling with inheritance in OOP

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C#

inheritance

I am trying to do some practice of OOP but I seem to not understand something. Here is my parents class:

class Human
    {
        public string name;
        public int age;

        public Human(string name, int age)
        {
            this.name = name;
            this.age = age;
        }
        public string Name
        {
            get { return name; }
            set { this.name = value; }
        }
        public int Age
        {
            get { return age; }
            set { this.age = value; }
        }

And here is my child class :

class Student:Human
    {
        private string speciality;
        private int facultynumber;

        public Student(string speciality, int facultynumber)
            : base(name,age)
        {
            this.facultynumber = facultynumber;
            this.speciality = speciality;
        }

        public string Speciality
        {
            get { return speciality; }
            set { this.speciality = value;}
        }
        public int Facultynumber
        {
            get { return facultynumber; }
            set { this.facultynumber = value; }
        }

Why is it firing me an Error, on the base : object reference is required to access non-static member

What I have tried:

I really don't know what to do...