Boris Sidis,
Nervous Ills, Their Cause and Cure
“ The fear instinct is the most primitive, the most fundamental, and the most powerful of all instincts. When the fear instinct is let loose, the animal succumbs. We should not wonder, therefore, that with the aberration of the fear instinct, the life guardian of the individual, all orientation is lost, the animal becomes demoralized, and the organism goes to destruction. No other instinct can surpass the fear instinct in its fatal effects. ”
