capacity. The understanding of the stupidest man becomes keen when objects are in question that closely concern his wishes; he now observes, weighs, and distinguishes with the greatest delicacy even the smallest circumstances that have reference to his wishes or fears. This has much to do with the cunning of half-witted persons, which is often remarked with surprise. On this account Isaiah rightly says, vexatio dat intellectum, which is therefore also used as a proverb. Akin to it is the German proverb, "Die Noth ist die Mutter der Künste" ("Necessity is the mother of the arts"); when, however, the fine arts are to be excepted, because the heart of every one of their works, that is, the conception, must proceed from a perfectly will-less, and only thereby purely objective, perception, if they are to be genuine. Even the understanding of the brutes is increased considerably by necessity, so that in cases of difficulty they accomplish things at which we are astonished. For example, they almost all calculate that it is safer not to run away when they believe they are not seen; therefore the hare lies still in the furrow of the field and lets the sportsman pass close to it; insects, when they cannot escape, pretend to be dead, &c. We may obtain a fuller knowledge of this influence from the special history of the self-education of the wolf, under the spur of the great difficulty of its position in civilised Europe; it is to be found in the second letter of Leroy's excellent book, "Lettres sur l'intelligence et la perfectibilité des animaux." Immediately afterwards, in the third letter, there follows the high school of the fox, which in an equally difficult position has far less physical strength. In its case, however, this is made up for by great understanding; yet only through the constant struggle with want on the one hand and danger on the other, thus under the spur of the will, does it attain that high degree of cunning which distinguishes it especially in old age. In all these enhancements of the intellect the will plays the part of a rider who with the
