“There are periods when to dare, is the highest wisdom”

“All noble enthusiasms pass through a feverish stage, and grow wiser and more serene”

“Men are never very wise and select in the exercise of a new power”

“A single hour a day, steadily given to the study of some interesting subject, brings unexpected accumulations of knowledge”

“The wise only possess ideas, the great part of mankind are possessed by them”

“The chief object of education is not to learn things but to unlearn things”