| 1728 | Many objects of sensation are common to all the senses [Aristotle] |
| 14037 | Atoms only have shape, weight and size, and the properties which accompany shape [Epicurus] |
| 16718 | Primary qualities are the cause of all the other sensible qualities [Albertus Magnus] |
| 16719 | The primary qualities are mixed to cause secondary qualities [Burley] |
| 6490 | For Descartes, objects have one primary quality, which is geometrical [Descartes, by Robinson,H] |
| 6725 | Locke believes matter is an inert, senseless substance, with extension, figure and motion [Locke, by Berkeley] |
| 15982 | Qualities are named as primary if they are needed for scientific explanation [Locke, by Alexander,P] |
| 12479 | Primary qualities produce simple ideas, such as solidity, extension, motion and number [Locke] |
| 12480 | Ideas of primary qualities resemble their objects, but those of secondary qualities don't [Locke] |
| 7049 | In Locke, the primary qualities are also powers [Locke, by Heil] |
| 3933 | Primary qualities (such as shape, solidity, mass) are held to really exist, unlike secondary qualities [Berkeley] |
| 23637 | Primary qualities are the object of mathematics [Reid] |
| 5466 | Primary qualities are number, figure, size, texture, motion, configuration, impenetrability and (?) mass [Ellis] |
| 22414 | You don't need to know how a square thing looks or feels to understand squareness [McGinn] |
| 22423 | Touch doesn't provide direct experience of primary qualities, because touch feels temperature [McGinn] |
| 22426 | We can perceive objectively, because primary qualities are not mind-created [McGinn] |
| 3901 | Touch only seems to reveal primary qualities [Scruton] |
| 6497 | We say objects possess no intrinsic secondary qualities because physicists don't need them [Robinson,H] |
| 7299 | Primary qualities can be described mathematically, unlike secondary qualities [Cardinal/Hayward/Jones] |
| 7300 | An object cannot remain an object without its primary qualities [Cardinal/Hayward/Jones] |
| 19647 | The aspects of objects that can be mathematical allow it to have objective properties [Meillassoux] |