There is nothing more necessary than truth, and in comparison with it everything else has only secondary value. This absolute will to truth: what is it? Is it the will to not allow ourselves to be deceived? Is it the will not to deceive? One does not want to be deceived, under the supposition that it is injurious, dangerous, or fatal to be deceived.
The Complete Works of Friedrich Nietzsche: The First Complete and Authorized English Translation (ed. 1910)