“If a single cell, under appropriate conditions, becomes a man in the space of a few years, there can surely be no difficulty in understanding how, under appropriate conditions, a cell may, in the course of untold millions of years, give origin to the human race.”

“The expression often used by Mr. Herbert Spencer of the Survival of the Fittest is more accurate, and is sometimes equally convenient.”

“In the future I see open fields for more important researches. Psychology will be securely based on the foundation already laid by Mr. Herbert Spencer, that of the necessary acquirement of each mental power and capacity by graduation.”

“The wise man must remember that while he is a descendant of the past, he is a parent of the future.”

“We do not commonly see in a tax a diminution of freedom, and yet it clearly is one.”

“A jury is composed of twelve men of average ignorance.”

“Those who have never entered upon scientific pursuits know not a tithe of the poetry by which they are surrounded.”

“People are beginning to see that the first requisite to success in life is to be a good animal.”

“Old forms of government finally grow so oppressive that they must be thrown off even at the risk of reigns of terror.”

“All socialism involves slavery.”

“Government is essentially immoral.”