Somewhat later than the Expositions, and the Daughter, Hus published his celebrated treatise, _O Savtokupectví_, on "traffic in holy things," or simony, which he completed on September 2, 1413. This valuable book is written in a manner similar to that of the works mentioned above, but the polemical tendency is here yet more evident, for Hus is here treating of the great plague-spot of his time. The constant note of just indignation renders the book very striking, and it would--as Mr. Wratislaw has truly remarked--well bear translation as a whole. I shall, from want of space, be unable to give more than one quotation. In Chapter IV. Hus deals with the question, Can a Pope be guilty of simony? He writes: "Let us see if it is possible for a Pope to be a simoniac. Some say it is impossible, for he is the lord of the whole world, who is entitled to take what he wishes and do what he wishes. Therefore is he the most holy father whom sin cannot touch? Now, you must know that many Popes were heretics, and generally bad, and they were deprived of the papal dignity. Therefore be not in doubt that the Pope can be a simoniac. And if some one maintain that he cannot commit simony or any deadly sin, then he must desire to raise him higher than St. Peter or the other Apostles. And to the argument that he (the Pope) is the lord of the whole world, who may take what he will and do what he will, I will answer that there is but one Lord of the whole world who cannot sin, and whose right it is to rule and do as He will, and that Lord is the Almighty God. And further, if, according to the argument, it is said that the Pope is the most holy father, whom sin cannot touch, I deny this; for one only is our most Holy Father, the Lord God, whom sin cannot touch."