The Wonderful Wizard of Oz

‘Can’t you give me brains?’ asked the Scarecrow.

‘You don’t need them. You are learning something every day. A baby has brains, but it doesn’t know much. Experience is the only thing that brings knowledge, and the longer you are on earth the more experience you are sure to get.’

(…)

‘But how about my courage?’ asked the Lion anxiously.

‘You have plenty of courage, I am sure,’ answered Oz. ‘ All you need is confidence in yourself. There is no living thing that is not afraid when it faces danger. True courage is in facing danger when you are afraid, and that kind of courage you have in plenty.’

(…)

‘How about my heart?’ asked the Tin Woodman.

‘Why, as for that,’ answered Oz, ‘I think you are wrong to want a heart. It makes the most people unhappy. If you only knew it, you are in luck not to have a heart.’

‘That must be a matter of opinion,’ said the Tin Woodman. ‘For my part, I will bear all the unhappiness without a murmur, if you will give me the heart.'

in The Wonderful Wizard of Oz by L. Frank Baum