Deliberation is the work of many men. Action, of one alone.

     — Charles de Gaulle

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An expert is one who knows more and more about less and less.

    — Nicholas Butler

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An expert is a man who has made all the mistakes which can be made in a very narrow field.

    — Niels Bohr,         Danish physicist

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The question should be, is it worth trying to do, not can it be done.

    — Allard [...]