"The greatest friend of truth is Time, her greatest enemy is Prejudice, and her constant companion is Humility."

"That writer does the most who gives his reader the most knowledge and takes from him the least time."

"If you would be known, and not know, vegetate in a village; if you would know, and not be known, live in a city."

"He who studies books alone will know how things ought to be, and he who studies men will know how they are."

"Tell me who admires and loves you, and I will tell you who you are."

"It is a profound truth that every summit scaled was once thought insurmountable from the valley below."

"No matter that patriotism is too often the refuge of scoundrels. Dissent, rebellion, and all-around hell-raising remain the true duty of patriots."

"The discovery of truth is prevented more effectively, not by the false appearance things present and which mislead into error, not directly by weakness of the reasoning powers, but by preconceived opinion, by prejudice."