Difference of Degree and not Kind

We must not look down with contempt on others. 
     All of us are going towards the same goal.
The difference between weakness and strength is one of  degree;
the difference between virtue and vice is one of degree;
the difference between heaven and hell is one of degree;
the difference between life and death is one of degree;
all differences in this world are of degree, and not of kind,
because oneness is the secret of everything.

                    - Swami Vivekananda,
                    Practical Vedanta I, London