“From the Latin word vulnerare, “to wound,” vulnerability is our susceptibility to be wounded. This fragility is part of our nature and cannot be escaped. The best the brain can do is to shut down conscious awareness of it when pain becomes so vast or unbearable that it threatens to overwhelm our capacity to function. The automatic repression of painful emotion is a helpless child’s prime defense mechanism and can enable the child to endure trauma that would otherwise be catastrophic.”