The Familiar Material Objects May Not Be

... Two Men Could Be Just Alike In All Their Dispositions To Verbal Behavior Under All Possible Sensory Stimulations, And Yet Themeanings Or Ideas Expressed In Their Identically Triggered And Identically Sounding Utterances Could Diverge Radically, For The Two Men, In A Wide Range Of Cases.

To Define An Expression Is, Paradoxically Speaking, To Explain How To Get Along Without It. To Define Is To Eliminate.

It Is Within Science Itself, And Not In Some Prior Philosophy, That Reality Is To Be Identified And Described.

One Man's Observation Is Another Man's Closed Book Or Flight Of Fancy.

The Word 'definition' Has Come To Have A Dangerously Reassuring Sound, Owing No Doubt To Its Frequent Occurrence In Logical And Mathematical Writings.