knowDefinition of knowledge: Secured insight is considered knowledge. An insight can never be considered absolutely secured, but only as beyond reasonable doubt.
menDefinition of man: Homo sapiens sapiens. A higher mammal of the biological order of primates. Able to reason according to the label.
, including those at ease with problems of the greatest complexity, can seldom accept even the simplest and most obvious
truthDefinition of truth: Accordance with the reality resp. a fact. The accuracy of the reflection of reality is meant with the notion of truth.
if it be such as would oblige them to admit the falsity of conlusions which they have delighted in explaining to colleages, which they have proudly taught to others, and which they have woven, thread by thread, into the fabric of their
livesDefinition of life: The amount of functioning organisms in the physical universe. Their typical properties are: energy and metabolism, organization, susceptibility, reproductive capacity, heredity and growth.