1791; and his Letter to a Noble Lord is even now as interesting as Lord John Russell’s Letter to Mr. Wilberforce, which appeared only a few weeks back. Ephemeral politics and still-born productions are speedily consigned to oblivion; great principles and original works are a match even for time itself! We may, by following up this train of ideas, give some account why time runs faster as our years increase. We gain by habit and experience a more determinate and settled, that is, a more uniform notion of things. We refer each particular to a given standard. Our impressions acquire the character of identical propositions. Our most striking thoughts are turned into truisms. One observation is like another, that I made formerly. The idea I have of a certain character or subject is just the same as I had ten years ago. I have learnt nothing since. There is no alteration perceptible, no advance made; so that the two points of time seem to touch and coincide. I get from the one to the other immediately by the familiarity of habit, by the undistinguishing process of abstraction. What I can recal so easily and mechanically does not seem far off; it is completely within my reach, and consequently close to me in apprehension. I have no intricate web of curious speculation to wind or unwind, to pass from one state of feeling and opinion to the other; no complicated train of associations, which place an immeasurable barrier between my knowledge or my ignorance at different epochs. There is no contrast, no repugnance to widen the interval; no new sentiment infused, like another atmosphere, to lengthen the perspective. I am but where I was. I see the object before me just as I have been accustomed to do. The ideas are written down in the brain as in the page of a book—_totidem verbis et literis_. The mind becomes _stereotyped_. By not going forward to explore new regions, or break up new grounds, we are thrown back more and more upon our past acquisitions; and this habitual recurrence increases the facility and indifference with which we make the imaginary transition. By thinking of what has been, we change places with ourselves, and transpose our personal identity at will; so as to fix the slider of our improgressive continuance at whatever point we please. This is an advantage or a disadvantage, which we have not in youth. After a certain period, we neither lose nor gain, neither add to, nor diminish our stock; up to that period we do nothing else but lose our former notions and being, and gain a new one every instant. Our life is like the birth of a new day; the dawn breaks apace, and the clouds clear away. A new world of thought and observation is opened to our search. A year makes the difference of an age. A total alteration takes place in our ideas, feelings, habits, looks. We outgrow ourselves. A separate set of objects, of the existence of which we had not a suspicion, engages and occupies our whole souls. Shapes and colours of