The Doctor looked at the two elegant figures with astonishment, remembering the form in which he had last seen them, the frog-like features and green corrugated skin.  'My, how you've changed!'

It was not surprising that they should be able to copy the clothes in Tegan's drawing, but to copy the human bodies which wore them...

Tegan was still taking in the astonishing transformation.  'But you're what I sketched!'

Enlightenment smiled.  'Yes.  You are an excellent draughtswoman, my dear.'

Tegan edged closer to the Doctor.  'I want to go.'

'There is no need to be frightened,' said Enlightenment calmly.  'Please stay.'

'I'm not frightened,' muttered Tegan defiantly.  But she was.

Adric was staring at the two tall elegant figures in awe.  'How did you do it - just change like that?'

'We enjoy the most advanced technology in the universe.'  There was a hint of complacency in Enlightenment's voice.

'Magical,' said the Doctor politely.

'No, not magic, Doctor.  A skill, like any other.'

Adric stared at her.  'You mean anyone can do it?'

'Yes.'

'Even me?'

'If you wished,' said Enlightenment placidly.  'But you have no need.  Yet.'

'But you have?' asked the Doctor casually.

'As you have seen, Doctor.  Earthlings find our native form... disturbing.'

Persuasion said smoothly, 'The dominant emotion on planet Earth is fear.  When last we were there, our reception was hostile.'

'That doesn't surprise me,' said Tegan, remembering the sinister frog-like creatures on the three thrones.

'We must read your history books,' said the Doctor brightly.

Enlightenment inclined her head.  'You will be welcome to do so.  It will also be necessary for me to instruct you in our computer language.'

'One couldn't wish for a more charming teacher.'

Persuasion said, 'A very elevated one, Doctor.'

'Yes, indeed.  Enlightenment herself!'

'Minister of Enlightenment.'

'Yes, of course.'  The Doctor looked thoughtfully at him.  'And you?  Now, let me guess...  Minister of Persuasion?'