It is because freedom means ...

It is because freedom means the renunciation of direct control of individual efforts that a free society can make use of so much more knowledge than the mind of the wisest ruler could comprehend.
It is because freedom means the renunciation of direct control of individual efforts that a free society can make use of so much more knowledge than the mind of the wisest ruler could comprehend.

More phrases

All the great things are simple, and many can be expressed in a single word: freedom, justice, honor, duty, mercy, hope.
I know but one freedom and that is the freedom of the mind.
 Antoine de Saint-Exupéry
Freedom is not worth having if it does not connote freedom to err.
The amount of happiness that you have depends on the amount of freedom you have in your heart.
 Thích Nhất Hạnh
Without freedom of thought, there can be no such thing as wisdom - and no such thing as public liberty without freedom of speech.

Quotes from the same author

In no other field has the world yet paid so dearly for the abandonment of nineteenth-century liberalism as in the field where the retreat began: in international relations. Yet only a small part of the lesson which experience ought to have taught us has been learned.
Many who think themselves infinitely superior to the aberrations of Nazism, and sincerely hate all manifestations, work at the same time for ideals whose realization would lead straight to the abhorred tyranny.
Our hopes of avoiding the fate which threatens must...[be to make]adjustments that will be needed if we are to recover and surpass our former standards...and only if every one of us is ready to individually obey the necessities of readjustment shall we be able to get through a difficult period as free men who can choose their own way of life. Let a uniform minimum be secured to everybody by all means; but let us admit at the same time that with this assurance of a basic minimum all claims for a privileged security for particular classes must lapse.
It is tempting to believe that social evils arise from the activities of evil men and that if only good men (like ourselves, naturally) wielded power, all would be well. That view requires only emotion and self-praise - easy to come by and satisfying as well. To understand why it is that 'good' men in positions of power will produce evil, while the ordinary man without power but able to engage in voluntary cooperation with his neighbors will produce good, requires analysis and thought, subordinating emotions to the rational.
There can be little doubt that man owes some of his greatest successes in the past to the fact that he has not been able to control social life. His continued advance may well depend on his deliberately refraining from exercising controls which are now in his power.