He [Marcus Aurelius] has doubts perhaps sometimes even about that to which he holds most firmly. There are only a few passages of this kind, but they… - George Long

The amount of our school learning can never be very great, and the value of it is allowed by all good judges to be in the discipline by which we learn, in the strengthening of the mental powers, and in the formation of character. He who learns even one thing well acquires a measure by which he may estimate himself and others: he knows what he does know, and he knows that he does not know that which he does not know. He is not deceived about himself, nor does he attempt to deceive others, nor is he likely to be deceived by others. He has attained the one sure element out of which improvement will come. All the knowledge, which we attempt to acquire and which we do really acquire, is the foundation of our character and the safe foundation on which must rest all that we shall learn afterwards and all that we shall do.

When I look at the number of things which a boy must now learn, or is encouraged to learn, and when I look at the questions in the examination papers, I am quite content that I was brought up in other days; and that if I did not learn much and was taught next to nothing, I have kept to old age the sense, whatever it may be, which came with me into the world.

The preparation for these examinations is a forcing system, a straining of the memory, a loading of the head with more than it can hold, and much more than it can understand, followed, as in bodily excesses, by disorder of function, addling of the brain, and the stoppage of healthy mental growth. The weak, who work hard to obtain their object, are damaged; the strong may suffer little or nothing, but they do not gain much. Those do best who do not trouble themselves about the matter, but do as well as they can and care not about success or failure.