[104] Bhikkhus, there are these four lakes. What four? The shallow one with a deep appearance, the deep one with a shallow appearance, the shallow one with a shallow appearance, and the deep one with a deep appearance. These, bhikkhus, are the four lakes. Even so, bhikkhus, there are these four kinds of persons comparable to lakes existing and found in the world. What four? The shallow one with a deep appearance, the deep one with a shallow appearance, the shallow one with a shallow appearance, and the deep one with a deep appearance. And how, bhikkhus, is a person shallow with a deep appearance? Here, bhikkhus, a certain person's going forward and returning, looking ahead and looking aside, bending and stretching, and wearing of the outer robe, bowl, and robes are inspiring; yet he does not understand as it really is (yathābhūta): 'This is suffering (dukkha)'; he does not understand as it really is: 'This is the origin of suffering'; he does not understand as it really is: 'This is the cessation of suffering'; he does not understand as it really is: 'This is the way of practice leading to the cessation of suffering.' Thus, bhikkhus, a person is shallow with a deep appearance. Just as that lake, bhikkhus, is shallow with a deep appearance, so, bhikkhus, I say this person is comparable to it. And how, bhikkhus, is a person deep with a shallow appearance? Here, bhikkhus, a certain person's going forward and returning, looking ahead and looking aside, bending and stretching, and wearing of the outer robe, bowl, and robes are not inspiring; yet he understands as it really is: 'This is suffering'; he understands as it really is: 'This is the origin of suffering'; he understands as it really is: 'This is the cessation of suffering'; he understands as it really is: 'This is the way of practice leading to the cessation of suffering.' Thus, bhikkhus, a person is deep with a shallow appearance. Just as that lake, bhikkhus, is deep with a shallow appearance, so, bhikkhus, I say this person is comparable to it. And how, bhikkhus, is a person shallow with a shallow appearance? Here, bhikkhus, a certain person's going forward and returning, looking ahead and looking aside, bending and stretching, and wearing of the outer robe, bowl, and robes are not inspiring; and he does not understand as it really is: 'This is suffering'; he does not understand as it really is: 'This is the origin of suffering'; he does not understand as it really is: 'This is the cessation of suffering'; he does not understand as it really is: 'This is the way of practice leading to the cessation of suffering.' Thus, bhikkhus, a person is shallow with a shallow appearance. Just as that lake, bhikkhus, is shallow with a shallow appearance, so, bhikkhus, I say this person is comparable to it. And how, bhikkhus, is a person deep with a deep appearance? Here, bhikkhus, a certain person's going forward and returning, looking ahead and looking aside, bending and stretching, and wearing of the outer robe, bowl, and robes are inspiring; and he understands as it really is: 'This is suffering'; he understands as it really is: 'This is the origin of suffering'; he understands as it really is: 'This is the cessation of suffering'; he understands as it really is: 'This is the way of practice leading to the cessation of suffering.' Thus, bhikkhus, a person is deep with a deep appearance. Just as that lake, bhikkhus, is deep with a deep appearance, so, bhikkhus, I say this person is comparable to it. These, bhikkhus, are the four kinds of persons comparable to lakes existing and found in the world.
End of the Fourth Sutta.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.