Harold E. Palmer,
The Principles of Language-Study
“ Language-learning, like all other arts as contrasted with sciences, is a habit-forming process. Proficiency in the understanding of the structure of a language is attained by treating the subject as a science, by studying the theory; but proficiency in the use of a language can only come as a result of perfectly formed habits. No foreign word, form, or combination of these is ‘known’ or ‘mastered’ until we can use it automatically, until we can attach it to its meaning without conscious analysis, until we can produce it without hesitation and conscious synthesis. ”
