Уверенность чаще порождается невежеством, нежели знанием.
Пояснение к цитате:
«It has often and confidently been asserted, that man's origin can never be known: but ignorance more frequently begets confidence than does knowledge: it is those who know little, and not those who know much, who so positively assert that this or that problem will never be solved by science».
«The Descent of Man» (1871), volume I, «Introduction», page 3.