The first days of the War were to me utterly amazing. My best friends, such as the Whiteheads, were savagely warlike. ...
The prospect filled me with horror, but what filled me with even more horror was the fact that the anticipation of carnage was delightful to something like ninety per cent of the population. ...
I became filled with despairing tenderness towards the young men who were to be slaughtered, and with rage against all the statesmen of Europe
Source: The Autobiography of Bertrand Russell, v.2 chap. 1:The First War, 1968, pp.16-17.
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