served fact; for a fact can with no sort of propriety be called a fact, unless some person or other has observed it. Reid "laid completely aside all the common hypothetical language concerning perception." His plain statement (so says Mr Stewart) contains nothing but facts—facts established, of course, by observation. It is a fact of observation then, according to Reid, that real objects precede perceptions; that perceptions follow when real objects are present. Now, when a man proclaims as fact such a sequence as this, what must he first of all have done? He must have observed the antecedent before it was followed by the consequent; he must have observed the cause out of combination with the effect; otherwise his statement is a pure hypothesis or fiction. For instance, when a man says that a shower of rain (No. 1), is followed by a refreshed vegetation (No. 2), he must have observed both No. 1 and No. 2, and he must have observed them as two separate things. Had he never observed any thing but No. 2 (the refreshed vegetation), he might form what conjectures he pleased in regard to its antecedent, but he never could lay it down as an observed fact, that this antecedent was a shower of rain. In the same way, when a man affirms it to be a fact of observation (as Dr Reid does, according to Stewart) that material objects are followed by perceptions, it is absolutely necessary for the credit of his statement that he should have observed this to be the case; that he should have observed material objects before they were followed by perceptions; that he should have observed the antecedent separate from the consequent: otherwise his statement, instead of being complimented as a plain statement of fact, must be condemned as a tortuous statement of hypothesis. Unless he has observed No. 1 and No. 2 in sequence, he is not entitled to declare that this is an observed sequence. Now, did Reid, or did any man ever observe matter anterior to his perception of it? Had Reid a faculty which enabled him to catch matter before it had passed in to perception? Did he ever observe it, as Hudibras says, "undressed?" Mr Stewart implies that he had such a faculty. But the notion is preposterous. No man can observe matter prior to his perception of it; for his observation of it presupposes his perception of it. Our observation of matter begins absolutely with the perception of it. Observation always gives the perception of matter as the first term in the series, and not matter itself. To pretend (as Reid and Stewart do) that observation can go behind perception, and lay hold of matter before it has given rise to perception—this is too ludicrous a doctrine to be even mentioned; and we should not have alluded to it, but for the countenance which it has received from the two great apostles of common sense.
This last bold attempt, then, on the part of Reid and Stewart (for Stewart adopts the doctrine which he reports) to prop their tottering analysis on direct observation and experience, must be pronounced a failure. Reid's "plain statement of fact" is not a true statement of observed fact; it is a vicious statement of conjectured fact. Observation depones to the existence of the perception of matter as the first datum with which it has to deal, but it depones to the existence of nothing anterior to this.
But will not abstract thinking bear out the analysis by yielding to us matter per se as a legitimate inference of reason? No; it will do nothing of the kind. To make good this inference, observe what abstract thinking must do. It must bring under the notice of the mind matter per se (No. 1) as something which is not the perception of it (No. 2): but whenever thought tries to bring No. 1 under the notice of the mind, it is No. 2 (or the perception of matter) which invariably comes. We may ring for No. 1, but No. 2 always answers the bell. We may labour to construe a tree per se to the mind, but what we always do construe to the mind is the perception of a tree. What we want is No. 1, but what we always get is No. 2. To unravel the thing explicitly—the manner in which we impose upon ourselves is this:—As explanatory of the perceptive process, we construe to our minds two number twos, and one of these we call No. 1. For example, we have the perception of a tree (No. 2); we wish to think the tree itself (No. 1) as that which gives
