The great work of the present for every man, and every organization of men, who would improve social conditions, is the work of education — the propagation of ideas. It is only as it aids this that anything else can avail. And in this work every one who can think may aid — first by forming clear ideas himself, and then by endeavoring to arouse the thought of those with whom he comes in contact.
Ch. 21 : Conclusion. - Social Problems (1883)