J. Gresham Machen said this quote

For Christians to influence the world with the truth of God's Word requires the recovery of the great Reformation doctrine of vocation. Christians are called to God's service not only in church professions but also in every secular calling. The task of restoring truth to the culture depends largely on our laypeople.To bring back truth, on a practical level, the church must encourage Christians to be not merely consumers of culture but makers of culture. The church needs to cultivate Christian artists, musicians, novelists, filmmakers, journalists, attorneys, teachers, scientists, business executives, and the like, teaching its laypeople the sense in which every secular vocation-including, above all, the callings of husband, wife, and parent--is a sphere of Christian ministry, a way of serving God and neighbor that is grounded in God's truth. Christian laypeople must be encouraged to be leaders in their fields, rather than eager-to-please followers, working from the assumptions of their biblical worldview, not the vapid clichés of pop culture.

~ J. Gresham Machen

I cannot tell you that the sacrifice will be light: it is a serious thing to stand against the whole current of an age; it is a serious thing to be despised and hated by the generality of one's fellow men. Yet that is increasingly the lot of the truth Christian today. He will not, indeed, be inclined to complain; for he has something with which all that he has lost is not worthy to be compared; and he knows that despite temporary opposition the ultimate future belongs to him and to His Lord. But for the present he is called upon to endure hardness as a good soldier of Jesus Christ. It can hardly be said that unworthy motives of self-interest can lead a man to enter into a calling in which he will win nothing but reproach.

~ J. Gresham Machen

We may preach with all the fervor of a reformer and yet succeed only in winning a straggler here and there, if we permit the whole collective thought of the nation or of the world to be controlled by ideas which, by the resistless force of logic, prevent Christianity from being regarded as anything more than a harmless delusion...What is to-day a matter of academic speculation, begins to-morrow to move armies and pull down empires.

~ J. Gresham Machen

What I need first of all is not exhortation, but a gospel, not directions for saving myself but knowledge of how God has saved me. Have you any good news? That is the question that I ask of you. I know your exhortations will not help me. But if anything has been done to save me, will you not tell me the facts?

~ J. Gresham Machen