Great minds are to make others great. Their superiority is to be used, not to break the multitude to intellectual vassalage, not to establish over them a spiritual tyranny, but to rouse them from lethargy, and to aid them to judge for themselves.
I am sorry to be leaving the BBC. I have enjoyed a fascinating seven years at the corporation and am particularly proud to have played a small part in the development of the BBC's Global News services, BBC World Service and BBC World.
The movement of the emitters of the spectral lines may be deduced on the basis of the Doppler principle.
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