Dogmatism and skepticism are both, in a sense, absolute philosophies; one is certain of knowing, the other of not knowing. What philosophy should dissipate is certainty, whether of knowledge or ignorance.

The quote “Dogmatism and skepticism are both, in a sense, absolute philosophies; one is certain of knowing, the other of not knowing. What philosophy should dissipate is certainty, whether of knowledge or ignorance.” by Bertrand Russell explores the tension between dogmatism and skepticism in the realm of philosophy. Russell, one of the most influential philosophers of the 20th century, points out that both extremes claim a kind of absolute certainty—dogmatism asserts firm knowledge, while skepticism insists that knowledge is impossible. For Russell, both approaches miss the true purpose of philosophy.

By stating that philosophy should “dissipate certainty,” Russell argues that philosophy’s role is not to replace one rigid belief with another but to cultivate intellectual humility and openness. True philosophical inquiry questions assumptions, challenges rigid positions, and accepts that human understanding is limited. This makes philosophy less about arriving at unshakable conclusions and more about clarifying ideas and exposing the complexity of truth.

The contrast between “certainty of knowledge” and “certainty of ignorance” is central to the quote. Russell highlights that both positions shut down curiosity: dogmatism dismisses further questioning because it assumes all answers are known, while skepticism halts inquiry by assuming answers are impossible. By rejecting both, philosophy creates a space where questioning continues, leading to progress in thought and understanding.

The origin of this quote lies in Russell’s broader work on logic, epistemology, and analytic philosophy, particularly his critiques of rigid belief systems. Throughout his writings, including A History of Western Philosophy and The Problems of Philosophy, he consistently promoted clarity, doubt, and inquiry over absolute claims. His words serve as a timeless reminder that the strength of philosophy is not in certainty but in its capacity to challenge and expand the boundaries of human thought.