Frits Zernike

Phase contrast was not discovered while working with a microscope, but in a different part of optics.

With the phase-contrast method still in the first somewhat primitive stage, I went in 1932 to the Zeiss Works in Jena to demonstrate. It was not received with such enthusiasm as I had expected.

About 1930, our laboratory had obtained a large concave grating and set it up in a Runge-Paschen mounting.

Deep down, there is in the substance of the cosmos a primordial disposition, sui generis, for self-arrangement and self-involution.

I see a lot of women of every age trying to be something else. I see them trying to imitate behaviors that they think belong to successful people.

I've learned that even the word 'jubilee' used in connection with the Reformation can give rise to discussions.