“It takes considerable knowledge just to realize the extent of your own ignorance.”– Thomas Sowell Related Quotes “No part of the world can be truly understood without a knowledge of its garment of vegetation, for this determines not only the nature of the animal inhabitants but also the occupations of the majority of human beings.”– Ellsworth Huntington “Our knowledge can only be finite, while our ignorance must necessarily be infinite.”– Karl Popper “The degree of one’s emotions varies inversely with one’s knowledge of the facts.”– Bertrand Russell