pupils’ minds. It is also useful if the scholars learn to write down in their note-books or among their collections of idioms everything that they hear or read, since in this way the imagination is assisted and it is easier to remember them later on.
Ninth Principle
43. Nothing is produced by nature of which the practical application is not soon evident.
For example, when a bird is formed it is soon evident that the wings are intended for flying and the legs for running. In the same way every part of a tree has its use, down to the skin and the bloom that surround the fruit.
Therefore
44. Imitation.—The task of the pupil will be made easier, if the master, when he teaches him anything, show him at the same time its practical application in every-day life. This rule must be carefully observed in teaching languages, dialectic, arithmetic, geometry, physics, etc. If it be neglected, the things that you are explaining will seem to be monsters from the new world, and the attitude of the pupil, who is indifferent whether they exist or no, will be one of belief rather than of knowledge. When things are brought under his notice and their use is explained to him, they should be put into his hands that he may assure himself of his knowledge and may derive enjoyment from its application.
Therefore
45. Those things only should be taught whose application can be easily demonstrated.
Tenth Principle
46. Nature is uniform in all its operations.
For instance, the production of all birds, and, indeed, of all living creatures, resembles that of any single bird
