“But high success is not to be obtained without rigid exactitude. Hence the long battery of super sensitive instruments and apparatus of my design, which stand before you today in their cases in the entrance hall. They tell you of the protracted efforts to get behind the deceptive seeming into the reality that remains unseen, of the continuous toil and persistence and resourcefulness called forth to overcome human limitations. All creative scientists know that the true laboratory is the mind, where behind illusions they uncover the laws of truth.