John Chrysostom — as excerpted in the Catena Aurea on Matthew 13:1-9

“Next, how is it according to reason to sow seed among thorns, or on stony ground, or by the wayside? Indeed in the material seed and soil of this world it would not be reasonable; for it is impossible that rock should become soil, or that the way should not be the way, or that thorns should not be thorns. But with minds and doctrines it is otherwise; there it is possible that the rock be made rich soil, that the way should be no more trodden upon, and that the thorns should be extirpated. That the most part of the seed then perished, came not of him that sowed, but of the soil that received it, that is the mind. For He that sowed put no difference between rich and poor, wise or foolish, but spoke to all alike; filling up his own part, though foreseeing all things that should come to pass, so that He might say, What ought I to have done that I have not done? (Is. 5:4) He does not pronounce sentence upon them openly and say, this the indolent received and have lost it, this the rich and have choked it, this the careless and have lost it, because He would not harshly reprove them, that He might not alienate them altogether. By this parable also He instructs His disciples, that though the greater part of those that heard them were such as perished, yet that they should not therefore be remiss; for the Lord Himself who foresaw all things, did not on this account desist from sowing.”