For scientific endeavor is a natural whole the parts of which mutually support one another in a way which, to be sure, no one can anticipate.
Albert EinsteinOne had to cram all this stuff into one's mind for the examinations, whether one liked it or not. This coercion had such a deterring effect on me that, after I had passed the final examination, I found the consideration of any scientific problems distasteful to me for an entire year.
Albert Einstein