Achieve Quote by Karl Popper

“Rational truth—and all truth is rational—is essentially that which can justify itself under criticism and in discussion.”

— R. G. Collingwood

“There comes a time when one must be strong with rationalists, for they can reduce anything whatever to dust, if they happen not to…

— Robertson Davies

“More erudite authors who advocate an irrationalist point of view, such as the pragmatist philosophers, are not to be caught out so easily. They…

— Bertrand Russell

“A fool will always rely on what someone else says, however an intelligent person would use critical thinking to justify the rationality of statements…

— Saaif Alam

“And it implies that if we respect truth, we must search for it by persistently searching for our errors: by indefatigable rational criticism, and…

— Karl R. Popper

The critical opinions of a writer should always be taken with a large grain of salt. For the most part, they are manifestations of…

— Anonymous

We all need critical confrontation of the fullest and most extreme kind that we can get. You can unnecessarily limit yourself by choosing your…

— Wayne Thiebaud

Profound insights arise only in debate, with a possibility of counterargument, only when there is a possibility of expressing not only correct ideas but…

— Andrei Sakharov

“I’m consciously shedding the assumption that a skeptical point of view is the most intellectually credible. Intellect does not function in opposition to mystery;…

— Krista Tippett

Even the greatest idea can become meaningless in the rush to judgement. To gauge an idea as feasible we must cut our ties to…

— Shigeo Shingo

Over the course of time this gave us a deep respect for ideas, both our own and those of others, and an understanding that…

— Robert B. Laughlin

... All ideas need to be heard, because each idea contains one aspect of the truth. By examining that aspect, we add to our…

— John Stuart Mill