§ 30. Their popularity was due, moreover, to the means employed, as well as to the result attained. The Jesuit teachers were to _lead_, not drive their pupils, to make their learning, not merely endurable, but even acceptable, “disciplinam non modo tolerabilem, sed etiam amabilem.” Sacchini expresses himself very forcibly on this subject. “It is,” says he, “the unvarying decision of wise men, whether in ancient or modern times, that the instruction of youth will be always best when it is pleasantest: whence this application of the word _ludus_. The tenderness of youth requires of us that we should not overstrain it, its innocence that we should abstain from harshness.... That which enters into willing ears the mind as it were runs to welcome, seizes with avidity, carefully stows away, and faithfully preserves.”[32] The pupils were therefore to be encouraged in every way to take kindly to their learning. With this end in view (and no doubt other objects also), the masters were carefully to seek the boys’ affections. “When pupils love the master,” says Sacchini, “they will soon love his teaching. Let him, therefore, show an interest in everything that concerns them and not merely in their studies. Let him rejoice with those that rejoice, and not disdain to weep with those that weep. After the example of the Apostle let him become a little one amongst little ones, that he may make them adult in Christ, and Christ adult in them ... Let him unite the grave kindness and authority of a father with a mother’s tenderness.”[33] § 31. In order that learning might be pleasant to the pupils, it was necessary that they should not be overtasked. To avoid this, the master had to study the character and capacity of each boy in his class, and to keep a book with all particulars about him, and marks from one to six indicating proficiency. Thus the master formed an estimate of what should be required, and the amount varied considerably with the pupil, though the quality of the work was always to be good. § 32. Not only was the work not to be excessive, it was never to be of great difficulty. Even the grammar was to be made as easy and attractive as possible. “I think it a mistake” says Sacchini, “to introduce at an early stage the more thorny difficulties of grammar: ... for when the pupils have become familiar with the earlier parts, use will, by degrees, make the more difficult clear to them. His mind expanding and his judgment ripening as he grows older the pupil will often see for himself that which he could hardly be made to see by others. Moreover, in reading an author, examples of grammatical difficulties will be more easily observed in connection with the context, and will make more impression on the mind, than if they are taught in an abstract form by themselves. Let them then, be carefully explained whenever they occur.”[34]