Change
When an object changes, it always changes in some particular way. A baby grows up, and so changes in respect of size and maturity; a snake sheds its skin, and so changes in respect of its skin. "Change" may therefore be defined as follows:
- An object, O, changes with respect to property, P, if and only if O has P at one time, and at a later time, O does not have P.
That seems to be, in one way, what it means for a thing to change: it has a property at one time, and later it does not have that property. If a banana becomes brown, it can then be said: at one time, the banana is yellow; several days later, the banana is not yellow, but is instead brown. This appears fairly straightforward at this point, and there are no apparent problems as yet.
Another way for an object to change is to change its parts.
- An object, O, changes with respect to its part, P, if and only if O has the part P at one time, and at a later time, O does not have P.
Some philosophers believe that an object can't persist through a change of parts. They defend mereological essentialism.
Read more about this topic: Identity And Change
Famous quotes containing the word change:
“Wisdom is not just knowing fundamental truths, if these are unconnected with the guidance of life or with a perspective on its meaning. If the deep truths physicists describe about the origin and functioning of the universe have little practical import and do not change our picture of the meaning of the universe and our place within it, then knowing them would not count as wisdom.”
—Robert Nozick (b. 1938)
“The change of Philomel, by the barbarous king
So rudely forced; yet there the nightingale
Filled all the desert with inviolable voice
And still she cried, and still the world pursues,
“Jug Jug” to dirty ears.”
—T.S. (Thomas Stearns)
“I know what love is. It’s understanding. It’s you and me and let the rest of the world go by. Just the two of us living our lives together happily and proudly. No self-torture and no doubt. It’s enduring and it’s everlasting. Nothing can change it. Nothing can change us, Ollie. That’s what I think love is.”
—Dewitt Bodeen (1908–1988)