They are God’s:  they are soldiers in Christ’s army.  They are labourers in Christ’s garden.  They are on God’s side in the battle of life, which is the battle of Christ and of all good men, against evil, against sin and ignorance, and the numberless miseries which sin and ignorance produce.  They are not the profligate; they are not the selfish, the idle; they are not the frivolous, the insolent; they are not the wilfully ignorant who do not care to learn, and do not even—­so brutish are they—­think that there is anything worth learning in the world, save how to turn sixpence into a shilling, and then spend it on themselves.  Not such are those who may hope to have their prayers heard, because they are worth hearing, and worth helping.  But they are the people who say to themselves, not once in their lives, not once a week on Sundays, but every day and all day long—­I must be good; I will be good.  I must be of use; I must be doing some work for God; and therefore I must learn.  I must learn God’s laws, and statutes, and commandments, about my station, and calling, and business in life.  Else how can I do it aright?  I dare no more be ignorant, than I dare be idle.  I must learn.  But how shall I learn?  Stupid I am, and ignorant, and the more I try to learn, the more I discover how stupid I am.  The more I do actually learn, the more I discover how ignorant I am.  There is so much to be learned; and how to learn it passes my understanding.  Who will teach me?  How shall I get understanding?  How shall I get knowledge?  And if I get them, how shall I be sure that they are true understanding, and true knowledge?  Mad people have understanding enough; and so have some who are not mad, but merely fools.  Wit enough they have, active and rapid brains:  but their understanding is of no use, for it is only misunderstanding; and therefore the more clever they are, the more foolish they are, and the more dangerous to themselves and their fellow-creatures.  Knowledge, too—­how shall I be sure that my knowledge, if I get it, is true knowledge, and not false knowledge, knowledge which is not really according to facts?  I see too many who have knowledge for which I care little enough.  Some know a thousand things which are of no use to them, or to any human being.  Others know a thousand things:  but know them in a shallow, inaccurate fashion; and so cannot make use of them for any practical purpose.  Others know a thousand things:  but know them all in a prejudiced and one-sided fashion; till they see things not as things are, but as they are not, and as they never will be; and therefore their knowledge, instead of leading them, misleads them, and they misjudge facts, misjudge men, and earth, and heaven, just as much as the man who should misjudge the sunlight of heaven and fancy it to be green or blue, because he looked at it through a green or blue glass.  How then shall I get true knowledge?  Knowledge which will be really useful, really worth knowing?  Knowledge which I shall know accurately, and practically too, so that I can use it in daily life, for myself and my fellow-men?  Knowledge, too, which shall be clear knowledge, not warped or coloured by my own fancies, passions, prejudices, but pure, and calm, and sound; Siccum Lumen, “Dry Light,” as the greatest of English Philosophers called it of old?