John Rawls wrote:Justice is the first virtue of social institutions, as truth is of systems of thought. A theory, however elegant and economical must be rejected or revised if it is untrue; likewise laws and institutions no matter how efficient and well-arranged must be reformed or abolished if they are unjust.

Che Guevera wrote: At a given moment it appears that there may have been a great commotion and a single great change. But that change has been gestating among men day by day, and sometimes generation by generation.