What is social liberty?

Freedom of thought, expression and protection against government in the form of personal and civil rights have little value if individuals are not given proper recognition so that they can work and live in accordance with their talents and capabilities. Social liberty corresponds to what we refer to today as opportunities for advancement or social mobility. It is the right of all individuals, irrespective of race, creed and the position of their parents, to be given every opportunity to attain a position in society commensurate with their capabilities. Personal liberties may become empty or purely formal prescriptions otherwise. Only when equal opportunities are provided for all can there be freedom for all.

Source: Liberalism – a primer BY JULIO C. TEEHANKEE, Ph.D. 2005