If Heaven has bestowed on you a fine imagination, you will often be seated at your piano in solitary hours, as if attached to it; you will desire to express the feelings of your heart in harmony, and the more clouded the sphere of harmony may perhaps be to you, the more mysteriously you will feel as if drawn into magic circles. In youth these may be your happiest hours. Beware, however, of abandoning yourself too often to the influence of a talent that induces you to lavish powers and time, as it were, upon phantoms. Mastery over the forms of composition and a clear expression of your ideas can only be attained by constant writing. Write, therefore, more than you improvise.

– Robert Schumann

Robert Schumann (translated by Henry Hugo Pierson), Advice to Young Musicains [Musikalische Haus- und Lebens-Regeln]. New York: J. Schuberth & Co. https://www.gutenberg.org/files/28219/28219-h/28219-h.htm, accessed 29 August