I think periods of browsing during which no occupation is imposed from without are important in youth because they give time for the formation of these apparently fugitive but really vital impressions.

What the world needs is not dogma but an attitude of scientific inquiry.

Science is at no moment quite right, but it is seldom quite wrong, and has, as a rule, a better chance of being right than the theories of the unscientific. It is, therefore, rational to accept it hypothetically.

America... where law and custom alike are based upon the dreams of spinsters...

Science does not aim at establishing immutable truths and eternal dogmas; its aim is to approach the truth by successive approximations, without claiming that at any stage final and complete accuracy has been achieved.

Love, children, and work, are the great sources of fertilizing contact between the individual and the rest of the world.

Neither acquiescence in skepticism nor acquiescence in dogma is what education should produce.