"There is one piece of advice, in a life of study, which I think no one will object to; and that is, every now and then to be completely idle - to do nothing at all."
"To do anything in this world worth doing, we must not stand back shivering and thinking of the cold and danger, but jump in, and scramble through as well as we can."
"Errors to be dangerous must have a great deal of truth mingled with them. It is only from this alliance that they can ever obtain an extensive circulation."
"Whatever you are from nature, keep to it; never desert your own line of talent. Be what nature intended you for, and you will succeed; be anything else, and you will be ten thousands times worse than nothing."