We could try to state regularities in the description of each of these bodies of data. Such regularities might consist of correlations among the various bodies of data (e.g. the dictionary correlation between sound-sequences and social situation or meaning), or they might note the recurrence of ‘similar’ parts within any one of these bodies of data.
- Harris (1951), a pag.4

[…] meaning considerations too, are involved in the determinations of elements, since, for example, when sounds (or sound-features) 'x' and 'y' occur in identical environments they are assigned to different phonemes if the complex containing them constitute different morphemes […].
- Harris (1951), a pag.7, n.4

In principle, meaning need be involved only to the extent of determining what is repetition.
- Harris (1951), a pag.7, n.4

It may be presumed that any two morphemes 'A' and 'B' having different meanings also differ somewhere in distribution: there are some environments in which one occurs and the other does not.
- Harris (1951), a pag.7, n.4