“The ultimate result of shielding men from the effects of folly is to fill the world with fools.”

“No man is equal to his book. All the best products of his mental activity go into his book, where they come separated from the mass of inferior products with which they are mingled in his daily talk.”

“Science is organized knowledge.”

“إن الأديان على قدر إختلافها فى عقائدها المعلنة,تتفق ضمنيا فى إيمانها بأن وجود الكون هو سر يتطلب التفسير”

“The preservation of health is a duty. Few seem conscious that there is such a thing as physical morality.”

“We too often forget that not only is there 'a soul of goodness in things evil,' but very generally also, a soul of truth in things erroneous.”

“The great aim of education is not knowledge but action.”