Victor Hugo said this quote

Intellectual and moral growth is no less indispensable than material improvement. Knowledge is a viaticum. Though is a prime necessity; truth is nourishment, like wheat. A reasoning faculty, deprived of knowledge and wisdom, pines away. We should feel the same pity for minds that do not eat as for stomachs. If there be anything sadder than a body perishing for want of bread, it is a mind dying of hunger for lack of light. All progress tends toward the solution. Some day, people will be amazed. As the human race ascends, the deepest layers will naturally emerge from the zone of distress. The effacement of wretchedness will be effected by a simple elevation level.