3. "The only abnormality is the incapacity to love."
- Quote by Anaïs Nin
5. "Prudence is a rich, ugly old maid courted by incapacity."
- Quote by William Blake
6. ""The incapacity of sound sleep denotes a mind sorely wounded."
- Quote by Charles Brockden Brown
8. "Spaceflight will never tolerate carelessness, incapacity, and neglect."
- Gene Kranz, Failure is Not an Option: Mission Control From Mercury to Apollo 13 and Beyond