The other thing Aron found about sensitive people is that sometimes they’re highly empathic. It’s as if they have thinner boundaries separating them … - Susan Cain

It's as if they have thinner boundaries separating them from other people's emotions and from the tragedies and cruelties of the world.

the orchid hypothesis” by David Dobbs in a wonderful article in The Atlantic. This theory holds that many children are like dandelions, able to thrive in just about any environment. But others, including the high-reactive types that Kagan studied, are more like orchids: they wilt easily, but under the right conditions can grow strong and magnificent.

Introversion — along with its cousins sensitivity, seriousness, and shyness — is now a second-class personality trait, somewhere between a disappointment and a pathology.

While extroverts tend to attain leadership in public domains, introverts tend to attain leadership in theoretical and aesthetic fields. Outstanding introverted leaders, such as Charles Darwin, Marie Curie, Patrick White and Arthur Boyd, who have created either new fields of thought or rearranged existing knowledge, have spent long periods of their lives in solitude. Hence leadership does not only apply in social situations, but also occurs in more solitary situations such as developing new techniques in the arts, creating new philosophies, writing profound books and making scientific breakthroughs.