It is not possible to be a scientist unless you believe that it is good to learn. It is not possible to be a scientist unless you believe that it is of the highest value to learn. It is not possible to be a scientist unless you believe that the knowledge of the world, and the power which this gives, is a thing which is of intrinsic value to humanity, and that you are using it to help in the spread of knowledge and are prepared to take the consequences.
Manhattan Project leader