Keen sensibility is doubtless a virtue of high order, when it does not interfere with steadiness of hand or coolness of nerve; but for the practitioner in his working-day world, a callousness which thinks only of the good to be effected, and goes ahead regardless of smaller considerations, is the preferable quality.

Aequanimitas: With Other Addresses to Medical Students, Nurses and, Practitioners of Medicine, Aequanimitas (p. 5)