§ 5. Mr. Spencer discusses more fully “the relative value of knowledges,” and this is a subject which has hitherto not met with the attention it deserves. It is not sufficient for us to prove of any subject taught in our schools that the knowledge or the learning of it is valuable. We must also show that the knowledge or the learning of it is of at least as great value as that of anything else that might be taught in the same time. “Had we time to master all subjects we need not be particular. To quote the old song—
Could a man be secure
That his life would endure,
As of old, for a thousand long years,
What things he might know!
What deeds he might do!
And all without hurry or care!
But we that have but span-long lives must ever bear in mind our limited time for acquisition.”
§ 6. To test the value of the learning imparted in education we must look to the end of education. This Mr. Spencer defines as follows: “To prepare us for complete living is the function which education has to discharge, and the only rational mode of judging of an educational course is to judge in what degree it discharges such function.” For complete living we must know “in what way to treat the body; in what way to treat the mind; in what way to manage our affairs; in what way to bring up a family; in what way to behave as a citizen; in what way to utilise those sources of happiness which nature supplies—how to use all our faculties to the greatest advantage of ourselves and others.” There are a number of sciences, says Mr. Spencer, which throw light on these subjects. It should, therefore, be the business of education to impart these sciences.