Logic and mathematics are nothing but specialised linguistic structures.
— Jean Piaget

Despite a decade of criticism and budget cuts, the specialised UN agencies have far more expertise and hands-on experience than any other organisations in the world.
— Jeffrey Sachs

The philosophy of the school was quite simple - the bright boys specialised in Latin, the not so bright in science and the rest managed with geography or the like.
— Aaron Klug

The pleasure of work is open to anyone who can develop some specialised skill, provided that he can get satisfaction from the exercise of his skill without demanding universal applause.
— Bertrand Russell