A fan is indispensable to a woman who can no longer blush.

Honesty first; then courage; then brains - and all are indispensable. [ Roosevelt ]

A certain degree of soul is indispensable to save us the expense of salt. [ Ben Jonson ]

Sincerity is the indispensable ground of all conscientiousness, and by consequence of all heartfelt religion. [ Kant ]

A solemn and religious regard to spiritual and eternal things is an indispensable element of all true greatness. [ Daniel Webster ]

A sound mind in a sound body, if the former be the glory of the latter, the latter is indispensable to the former. [ Edwards ]

Education, however indispensable in a cultivated age, produces nothing on the side of genius. When education ends, genius often begins. [ Isaac Disraeli ]

To doubt is a misfortune, but to seek when in doubt is an indispensable duty. So he who doubts and seeks not is at once unfortunate and unfair. [ Pascal ]

Two gifts are indispensable to the dramatic poet; one is the power of forgetting himself, the other is the power of remembering his characters. [ Stoddart ]

Oh! why is daily bread indispensable to the poet and to the artist! This inexorable necessity darkens for them the joys of nature and the radiations of the beautiful. [ Mme. Louise Colet ]

To the understanding of anything, two conditions are equally required - intelligibility in the thing itself being no whit more indispensable than intelligence in the examiner of it. [ Carlyle ]

Grief or misfortune seems to be indispensable to the development of intelligence, energy, and virtue. The proofs to which the people are submitted, as with individuals, are necessary then to draw them from their lethargy, to disclose their character. [ Fearon ]