sensitivity, n.All

The human eye is so sensitive that, if the Earth were flat and it was a dark night, a candle’s flame could be seen from 30 miles away.

Sensitivity is feeling snubbed if an epidemic overlooks you.

Why was the burglar so sensitive?He takes things personally

Sensitivity is an increase in both pleasure and pain. We cannot be more sensitive to pleasure without being more sensitive to pain.

Sensitivity's lack is perhaps basically an unawareness of ourselves.