All is in a continual flux upon the earth. Nothing in it keeps a form constant and determinate; our affections, fastening on external things, necessarily change and pass just as they do. Ever in front of us or behind us, they recall the past that is gone, or anticipate a future that in many a case is destined never to be. There is nothing solid to which the heart can fix itself. Here we have little more than a pleasure that comes and passes away; as for the happiness that endures, I cannot tell if it be so much as known among men. There is hardly in the midst of our liveliest delights a single instant when the heart could tell us with real truth--"_I would this instant might last for ever_." And how can we give the name of happiness to a fleeting state that all the time leaves the heart unquiet and void, that makes us regret something gone, or still long for something to come? But if there is a state in which the soul finds a situation solid enough to comport with perfect repose, and with the expansion of its whole faculty, without need of calling back the past, or pressing on towards the future; where time is nothing for it, and the present has no ending; with no mark for its own duration and without a trace of succession; without a single other sense of privation or delight, of pleasure or pain, of desire or apprehension, than this single sense of existence--so long as such a state endures, he who finds himself in it may talk of bliss, not with a poor, relative, and imperfect happiness such as people find in the pleasures of life, but with a happiness full, perfect, and sufficing, that leaves in the soul no conscious unfilled void. Such a state was many a day mine in my solitary musings in the isle of St. Peter, either lying in my boat as it floated on the water, or seated on the banks of the broad lake, or in other places than the little isle on the brink of some broad stream, or a rivulet murmuring over a gravel bed.