The more progress physical sciences make, the more they tend to enter the domain of mathematics, which is a kind of centre to which they all converge. We may even judge the degree of perfection to which a science has arrived by the facility with which it may be submitted to calculation.
If you are to judge a man, you must know his secret thoughts, sorrows, and feelings; to know merely the outward events of a man's life would only serve to make a chronological table-a fool's notion of history.