Resolves perish into vacancy, that, if executed, might have been noble works. [ Henry Giles ]

If he could only see how small a vacancy his death would leave, the proud man would think less of the place he occupies in his lifetime. [ Legouve ]

The failure of his mind in old age is often less the result of natural decay than of disuse. Ambition has ceased to operate; contentment brings indolence: indolence, decay of mental power, ennui, and sometimes death. Men have been known to die, literally speaking, of disease induced by intellectual vacancy. [ Sir Benjamin Brodie ]