The quest of the absolute leads into the four-dimensional world.
Proof is an idol before whom the pure mathematician tortures himself.
Probably the simplest hypothesis... is that there may be a slow process of annihilation of matter.
It is even possible that laws which have not their origin in the mind may be irrational, and we can never succeed in formulating them.
It is also a good rule not to put overmuch confidence in the observational results that are put forward until they are confirmed by theory.
If your theory is found to be against the second law of theromodynamics, I give you no hope there is nothing for it but to collapse in deepest humiliation.
It is sound judgment to hope that in the not too distant future we shall be competent to understand so simple a thing as a star.
We have found a strange footprint on the shores of the unknown.
Who will observe the observers
Shuffling is the only thing which Nature cannot undo.
The mathematics is not there till we put it there.
Oh leave the Wise our measures to collate. One thing at least is certain, light has weight. One thing is certain and the rest debate. Light rays, when near the Sun, do not go straight.
It is one thing for the human mind to extract from the phenomena of nature the laws which it has itself put into them it may be a far harder thing to extract laws over which it has no control.