“An opinion should be the result of thought, not a substitute for it. ”

“A public-opinion poll is no substitute for thought.”

“A leader should demonstrate his thoughts and opinions through his actions, not through his words.”

“One test result is the worth one-thousand expert opinions.”

“What is reasoning? It is the result of doing away with the vital distinction which separates subjectivity and objectivity. As a form of abstract thought reasoning is not profoundly dialectical enough; as an opinion and a conviction it lacks full-blooded individuality. But where mere scope is concerned, reasoning has all the apparent advantage; for a thinker can encompass his science, a man can have an opinion upon a particular subject and a conviction as a result of a certain view of life, but one can reason about anything.”

“The enemy of science is not religion... . The true enemy is the substitution of thought, reflection, and curiosity with dogma.”