It is sometimes said that we should never believe a scientific theory until it is verified by experiment. But a famous astronomer has also stated that we should never believe an observation until it is confirmed by a theory.

...it's the process of losing oneself in the jungle that makes science worth doing.

Thus, the distance between any two galaxies increases in time, creating the illusion of mechanical motion. But in reality, galaxies just sit there, contemplating the spectacle of the universe creating more and more space in between them.

Inflation is really like drugging the baby universe with speed. The supercool union of the hitherto unfriendly gods was blessed by amphetamine, and this made the universe inflate rather than just expand. The early orgy of expansion in the universe comes to an abrupt end as soon as the supercooled particle stuff finally freezes.

My diary entries during this period constantly refer to the importance of learning how to take criticism. If you shut yourself in your own little world, that will be the death of your theory. On the other hand, many of the criticisms you receive are pointless and simply reflect the view that anything new is bad. In such a delicate situation it is crucial to tread gingerly and be careful to appreciate the difference between pertinent and idiotic comments.

Becoming a real researcher has been the ultimate humbling experience for me. Nature is the examiner from hell; if you find new things at all, you always find them the hard way, with sweat and tears. Only then do you notice that there was a really easy way to find them. But this insight rarely arrives before you have been utterly humiliated and reduced to despair.

The game of science can accurately be described as a never-ending insult to human intelligence.