much less are men apt to confound the names of ideas belonging to different senses, and call a colour by the name of a taste, &c.
 John Locke, An Essay Concerning Human Understanding (1689). copy citation

Context

“they being but few in number, and such as, if he doubts or mistakes in, he may easily rectify by the objects they are to be found in. Therefore it is seldom that any one mistakes in his names of simple ideas, or applies the name red to the idea green, or the name sweet to the idea bitter: much less are men apt to confound the names of ideas belonging to different senses, and call a colour by the name of a taste, &c. Whereby it is evident that the simple ideas they call by any name are commonly the same that others have and mean when they use the same names. 10. Ideas of mixed Modes most liable to be false in this Sense.” source