“My father was the most rational and the most dispassionate of men.”

“So far as the economic condition of society and the general mode of living and thinking were concerned, I might claim to have live...”

“What we now call school training, the pursuit of fixed studies at stated hours under the constant guidance of a teacher, I could s...”

“My father followed, during most of his life, the precarious occupation of a country school teacher.”

“One hardly knows where, in the history of science, to look for an important movement that had its effective start in so pure and s...”

“In 1858 I received the degree of D. S. from the Lawrence Scientific School, and thereafter remained on the rolls of the university...”