"I fear a great many Christian people do not think much about their religion" - C H Spurgeon

"I fear to a very large extent in this age the minds even of good people are empty, and void, and waste. Years ago, when the influence of the Puritan age yet lingered among us, the female members of Christian churches were generally women of very considerable education, whose range of reading was very different from that of their sisters in these days, and whose theological knowledge was profound; while the men who were members of our Nonconformist churches, were as a rule persons of very clear doctrinal knowledge - perhaps rather too much given to controversy, and to pushing their own views without sufficient tolerance for the views of others - and on the whole, Nonconformist Christianity was highly intelligent, thoughtful, and meditative. Men and women then when they joined the church, knew what they believed, and believed what they knew; they were prepared to be counted singular for their belief, but were equally prepared to justify themselves for talking up so separated a position. They were students of the word of God and of such books as opened up to them the word of God; so that our armies of believers, if they were fewer than now, were nevertheless very strong, because the warriors handled their weapons well, were well drilled, and at home in the holy war. I fear a great many Christian people do not think much about their religion. They give their guinea subscription, they occupy their seat at the meetinghouse, they attend the prayer meetings, but they are little given to thinking out a system of doctrines, or to ransacking the weaning of Scripture. Contemplative pursuits are not so general among Christian professors as I could wish."

- C. H. Spurgeon, Think well and do well

http://www.recoverthegospel.com/Old%20Recover%20the%20Gospel%20Site/Spurgeon/Spurgeon%201-1000/956.pdf