Charles Spurgeon on being selective concerning what we read:

One mouthful is quite enough, and one sentence of some books ought to suffice for a sensible man to reject the whole mass. Let those who can relish such meat feed on it, but I have a taste for better food.

Keep to the study of the Word of God. 

—C.H. Spurgeon (19 June 1834 – 31 January 1892, English Particular Baptist preacher).