The word's field
Mano names mind in its working, thinking aspect. It descends from an old s-stem, manas, and Pali keeps the archaic declension partly alive: the nominative stands as mano, the instrumental as manasā, while at the end of compounds the stem contracts to -mana. The root sense is cognitive, to think, to measure, to intend, and the word carries that active grammar wherever it goes.
The Pali analysis of consciousness sets mano within a working trio, and the distinction organizes the whole field. On the standard reading preserved in the lexical tradition, mano is the intellectual functioning of consciousness, viññāṇa is the field of sense and sense-reaction, and citta is the subjective, affective aspect of the same mental life. The three are not three minds but three angles on one process, and mano is the angle that thinks. From this analysis follows the feature that most marks the word: mano is counted as the sixth sense. Where the eye has its visible forms and the ear its sounds, the proper field of mano is dhammā — mental objects, ideas, the rational content of experience. It is a sense adapted to the intelligibility of things as the eye is adapted to their visibility, and this places thought inside the same architecture of contact, feeling, and grasping that governs the outward senses.
The commentarial tradition reads mano less as a substance than as a function that must be watched, because it is the faculty through which intention forms and action begins. In the ethical psychology of the suttas the deeds of body, speech, and mind are weighed together, and mind is named first. Mano is therefore both an instrument of knowing and the place where moral life originates, the point at which a state of mind becomes a deed.
In the corpus
The lemma occurs 43 times across 5 works in the indexed collection. The distribution is uneven and revealing: the Digha Nikaya carries 20 of the occurrences, the Sutta Nipata 13, the Dhammapada 6, and the Itivuttaka and Udana 2 each. Nearly four-fifths of the attested uses sit in the two works that most sustain analytic and verse-didactic treatment of mind — the long discourses of the Digha, where doctrine is set out at length, and the terse verse of the Sutta Nipata and Dhammapada, where the same doctrine is compressed into memorable lines.
That the word concentrates in the Digha and the verse anthologies rather than spreading evenly is consistent with its role. Mano is a term of analysis: it earns its keep where the mind is being taken apart into senses and functions, or where a verse must state the priority of mind over speech and act. It appears where thought is the subject, not scattered through narrative.
Canonical moments
The plainest statement of the word's ethical weight opens the Dhammapada. At Dhammapada 116 the mind is the leader of every state — mental phenomena are said to be preceded by mano, made by mano, so that speech and action follow the quality of the thought that fathered them. The verse fixes mano as the origin point of moral life, the faculty whose condition decides the character of what proceeds from it.
The Digha Nikaya supplies the analytic register. At Digha Nikaya DN 11:6.3 and again at DN 11:6.5 mano stands within the enumeration of mind as a sense-base, the sixth alongside the five bodily senses — the locus that grounds the whole doctrine of the internal spheres and their objects. Here the word is not exhorting but classifying: it names the mental sense whose field is ideas, and so completes the sixfold scheme on which so much of the analysis of experience rests.
Two further verses of the Dhammapada return to the practical stakes. At Dhammapada 300 and Dhammapada 301 the mind that delights in what is wholesome, in awareness and in harmlessness, is held up as the mark of those whose training is awake day and night. The word here is the mind that can be trained toward the good, the same faculty that, left unguarded, leads the other way. Across these loci mano moves from leader of all states, to sixth sense in the analysis of experience, to the trainable ground of the practice — one word doing the work of origin, of classification, and of discipline.
The word's world
Mano sits inside a family of Pali terms for mind that overlap without collapsing into one. Its closest partners are citta, the mind as affective and subjective center, and viññāṇa, consciousness as the bare registering of sense — the trio in which mano holds the thinking, coordinating place. Beyond them lie the fruits and objects of mind that the tradition tracks with equal care: vedanā, the feeling-tone that arises at contact; saṅkhāra, the formations that condition mind; and sati, the mindfulness that watches mano at work. Where the mind is purified rather than merely analyzed, the tradition speaks of paññā, the discernment that mano matures into.
The resonances run across the wings. The Sanskrit manas is the same word at an earlier stage, the coordinating inner sense that gathers the reports of the outer senses before intellect judges them — the direct cognate from which the Pali term descends. Greek preserves a comparable division of labor: psychē is the animating soul, but the Greek analysis, like the Pali, keeps the thinking, grasping faculty distinct from the breath and life that other soul-words carry. Chinese thought locates the coordinating and moral center in the xin, the heart-mind that thinks and feels at once, closer in scope to Pali citta than to mano precisely because it does not split cognition from affect. Against that comparison mano stands out for its narrowness: it is not the whole inner life but one sharply defined function within it, the sense whose objects are ideas and whose discipline is the beginning of the path.
Grounding: corpus figures and citations from the live Logoi corpus record (receipt soul-word-journey-v0). PTS Pali–English Dictionary senses from the wing's lexicon shelf. Cross-references: citta, viññāṇa, vedanā, saṅkhāra, sati, paññā, manas, xin.