There are few things as universal as a mother's love.  Depictions of mothers and children are found in nearly every culture, and can be found far into history.  There is something in that connection which unites us all. 

"The moment a child is born, the mother is also born.  She never existed before.  The woman existed, but the mother, never.  A mother is something absolutely new."  ~Rajneesh

"All women become like their mothers.  That is their tragedy.  No man does.  That's his."  ~Oscar Wilde, The Importance of Being Earnest, 1895

"Whatever else is unsure in this stinking dunghill of a world a mother's love is not."  ~James Joyce