Best Quotes on Critical Thinking

The first duty of a revolutionary is to be educated.

A country that does not know how to read and write is easy to deceive.

Ninety per cent of thought force is wasted by the ordinary human being, and therefore he is constantly committing blunders; the trained man or mind never makes a mistake. When the mind is concentrated and turned backward on itself, all within us will be our servants, not our masters.