The necessity of action to the mind, and the keen edge it gives to our desires, is shown in the different value we set on past and future objects. It is commonly, and we might almost say universally, supposed, that there is an essential difference in the two cases. In this instance, however, the strength of our passions has converted an evident absurdity into one of the most inveterate prejudices of the human mind. That the future is really or in itself of more consequence than the past, is what we can neither assent to nor even conceive. It is true, the past has ceased to be, and is no longer anything, except to the mind; but the future is still to come, and has an existence in the mind only. The one is at an end, the other has not even had a beginning; both are purely ideal: so that this argument would prove that the present only is of any real value, and that both past and future objects are equally indifferent, alike nothing. Indeed, the future is, if possible, more imaginary than the past; for the past may in some sense be said to exist in its consequences; it acts still; it is present to us in its effects; the mouldering ruins and broken fragments still remain; but of the future there is no trace. What a blank does the history of the world for the next six thousand years present to the mind, compared with that of the last? All that strikes the imagination, or excites any interest in the mighty scene is _what has been_. Neither in reality, then, nor as a subject of general contemplation, has the future any advantage over the past; but with respect to our own passions and pursuits it has. We regret the pleasures we have enjoyed, and eagerly anticipate those which are to come; we dwell with satisfaction on the evils from which we have escaped, and dread future pain. The good that is past is like money that is spent, which is of no use, and about which we give no further concern. The good we expect is like a store yet untouched, in the enjoyment of which we promise ourselves infinite gratification. What has happened to us we think of no consequence--what is to happen to us, of the greatest. Why so? Because the one is in our power, and the other not; because the efforts of the will to bring an object to pass or to avert it, strengthen our attachment to or our aversion from that object; because the habitual pursuit of any purpose redoubles the ardour of our pursuit, and converts the speculative and indolent interest we should otherwise take in it into real passion. Our regrets, anxiety, and wishes, are thrown away upon the past, but we encourage our disposition to exaggerate the importance of the future, as of the utmost use in aiding our resolutions and stimulating our exertions.