Every person takes the limits of their own field of vision for the limits of the world. — Arthur Schopenhauer. German philosopher (1788–1860)
All truth passes through 3 stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident.
If you want to know your true opinion of someone, watch the effect produced in you by the first sight of a letter from him.