Niels Bohr: An expert is a person who has made all the mistakes that can be made in a very narrow fi


	Niels Bohr Niels Bohr An expert is a person who has made all the mistakes that can be made in a very narrow field. Niels Bohr BestQuotes4Ever.com An expert is a person who has made all the mistakes that can be made in a very narrow field. 2877

Niels Bohr