Need to write well

It is not necessary to be a "person of letters" to have the need to write well, that is, adequately. The written word is imperative in any modern activity.
The word —human distinctive— is the specific instrument of individual expression and communication between men. This vehicle of external language (downloading or externalization of the complicated internal language) can be manifested orally or in writing. When written language is used, there is no escape from certain demands that oral language does not have. Why is written expression tyrannical within a formality or normative sense from which spoken expression is largely exempt? The reason arises from the very nature of these expressive forms and from the circumstances in which one and the other are made.
Oral expression not only has language at its disposal - the words themselves - but also makes effective use of other means: the intentional tone with which things are said, the nuances emphatic, bodily action (gestures, movements, postures), significant silence, imperceptible or extrasensory transmissions, the environment or external situation that surrounds the interlocutors; in short, the set of paralinguistic elements that acts with equivalent or greater efficiency than the words themselves. In addition, in the spoken form there is the possibility of repetitions, explanations, extensions, reluctance or suggestions to facilitate the understanding according to the personal needs of the listener, a situation that does not appear in the rigid and "collectivized" expression written.

The demands of the written forms are born from the "depersonalized" way in which they serve as a communicative medium, from a paper, between the writer and the readers of it. Graphic expressions are static, cold, limited to the molds of their material structure and their placement in established ways. The intentions must come from the text, the silences of the punctuation, the emphasis or the suggestion of the few auxiliary signs that are available. Conventions impose a special selection of terms "suitable" - to be written. Syntax has its demands, spelling its own, while style — period, genre, group, or individual - establishes certain conditions of measurement, sound or placement of the elements to achieve the end proposed. Furthermore, the graphic economy - adapted to the demands of the times - limits expressive waste. Finally, that "faceless" receiver that is the reader and the "shapeless" circumstance in which the writing will arrive, determine the most tragic and most generous thing about the writing: the need to generalize - not "medianize" - as many expressions as possible, so that it is comprehensible to the greatest number of people and adaptable to the most diverse receptive circumstances (in written public).
For all the above, it is understandable that the need to write well (in the correct, functionally adequate for the purpose it pursues) for anyone who acts in a medium civilized.