“ Men who exercise chiefly those faculties of the mind which work independently of the will,—poets and artists, for instance, who follow their imagination in their creative moments, instead of keeping it in hand as your logicians and practical men do with their reasoning faculty,—such men are too apt to call in the mechanical appliances to help them govern their intellects. ”
 Oliver Wendell Holmes Sr., The Autocrat of the Breakfast-Table (1858). copy citation

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“It is because the brain is locked up and we cannot touch its movement directly, that we thrust these coarse tools in through any crevice, by which they may reach the interior, and so alter its rate of going for a while, and at last spoil the machine. Men who exercise chiefly those faculties of the mind which work independently of the will,—poets and artists, for instance, who follow their imagination in their creative moments, instead of keeping it in hand as your logicians and practical men do with their reasoning faculty,—such men are too apt to call in the mechanical appliances to help them govern their intellects. —He means they get drunk,—said the young fellow already alluded to by name. Do you think men of true genius are apt to indulge in the use of inebriating fluids? said the divinity-student. If you think you are strong enough to bear what I am going to say,—I replied,—I will talk to you about this.” source