Today I have lost one of my dearest friends, England one of her greatest men. Keith Joseph understood that it was necessary to win again the intellectual argument for freedom, and that to do this we must start from first principles. He was in many ways an unlikely revolutionary. For all his towering intellect, he was deeply humble. He spoke out boldly, however hostile the audience. Yet he hated to give offence. Above all, his integrity shone out in everything he said and did. His best memorial lies in the younger generations of politicians whom he inspired. But for me he is irreplaceable.