"The painter has to unlearn the habit of thinking that things seem to have the colour which common sense says they 're…"

"It is evident from what we have found, that there is no colour which preeminently appears to be the colour of the tab…"

"The same thing applies to the texture. With the naked eye one can see the grain, but otherwise the table looks smooth…"

"The shape of the table is no better. We are all in the habit of judging as to the 'real' shapes of things, and we do …"

"Similar difficulties arise when we consider the sense of touch. It is true that the table always gives us a sensation…"

"Thus it becomes evident that the real table, if there is one, is not the same as what we immediately experience by si…"

"If we cannot be sure of the independent existence of objects, we cannot be sure of the independent existence of other…"

"It may be that the whole outer world is nothing but a dream, and that we alone exist. This is an uncomfortable possib…"

"Give the name of 'sense-data' to the things that are immediately known in sensation: such things as colours, sounds, …"

"Is there any knowledge in the world which is so certain that no reasonable man could doubt it? This question, which a…"