Suggestions
Use up and down arrows to review and enter to select.Please wait while we process your payment
If you don't see it, please check your spam folder. Sometimes it can end up there.
If you don't see it, please check your spam folder. Sometimes it can end up there.
Please wait while we process your payment
By signing up you agree to our terms and privacy policy.
Don’t have an account? Subscribe now
Create Your Account
Sign up for your FREE 7-day trial
Already have an account? Log in
Your Email
Choose Your Plan
Save over 50% with a SparkNotes PLUS Annual Plan!
Purchasing SparkNotes PLUS for a group?
Get Annual Plans at a discount when you buy 2 or more!
Price
$24.99 $18.74 /subscription + tax
Subtotal $37.48 + tax
Save 25% on 2-49 accounts
Save 30% on 50-99 accounts
Want 100 or more? Contact us for a customized plan.
Your Plan
Payment Details
Payment Summary
SparkNotes Plus
You'll be billed after your free trial ends.
7-Day Free Trial
Not Applicable
Renews February 13, 2023 February 6, 2023
Discounts (applied to next billing)
DUE NOW
US $0.00
SNPLUSROCKS20 | 20% Discount
This is not a valid promo code.
Discount Code (one code per order)
SparkNotes Plus subscription is $4.99/month or $24.99/year as selected above. The free trial period is the first 7 days of your subscription. TO CANCEL YOUR SUBSCRIPTION AND AVOID BEING CHARGED, YOU MUST CANCEL BEFORE THE END OF THE FREE TRIAL PERIOD. You may cancel your subscription on your Subscription and Billing page or contact Customer Support at custserv@bn.com. Your subscription will continue automatically once the free trial period is over. Free trial is available to new customers only.
Choose Your Plan
Payment Details
Payment Summary
For the next 7 days, you'll have access to awesome PLUS stuff like AP English test prep, No Fear Shakespeare translations and audio, a note-taking tool, personalized dashboard, & much more!
You’ve successfully purchased a group discount. Your group members can use the joining link below to redeem their group membership. You'll also receive an email with the link.
Members will be prompted to log in or create an account to redeem their group membership.
Thanks for creating a SparkNotes account! Continue to start your free trial.
Please wait while we process your payment
Your PLUS subscription has expired
Please wait while we process your payment
Please wait while we process your payment
The Physics takes its title from the Greek word phusis, which translates more accurately as “the order of nature.” The first two books of the Physics are Aristotle’s general introduction to the study of nature. The remaining six books treat physics itself at a very theoretical, generalized level, culminating in a discussion of God, the First Cause.
The Physics opens with an investigation into the principles of nature. At root, there must be a certain number of basic principles at work in nature, according to which all natural processes can be explained. All change or process involves something coming to be from out of its opposite. Something comes to be what it is by acquiring its distinctive form—for example, a baby becomes an adult, a seed becomes a mature plant, and so on. Since this the baby or the seed were working toward this form all along, the form itself (the idea or pattern of the mature specimen) must have existed before the baby or seed actually matured. Thus, the form must be one of the principles of nature. Another principle of nature must be the privation or absence of this form, the opposite out of which the form came into being. Besides form and privation, there must be a third principle, matter, which remains constant throughout the process of change. If nothing remains unchanged when something undergoes a change, then there would be no “thing” that we could say underwent the change. So there are three basic principles of nature: matter, form, and privation. For example, a person’s education involves the form of being educated, the privation of being ignorant, and the underlying matter of the person who makes the change from ignorance to education. This view of the principles of nature resolves many of the problems of earlier philosophers and suggests that matter is conserved: though its form may change, the underlying matter involved in changes remains constant.
Change takes place according to four different kinds of cause. These causes are closer to what we might call “explanations”: they explain in different ways why the change came to pass. The four causes are (1) material cause, which explains what something is made of; (2) formal cause, which explains the form or pattern to which a thing corresponds; (3) efficient cause, which is what we ordinarily mean by “cause,” the original source of the change; and (4) final cause, which is the intended purpose of the change. For example, in the making of a house, the material cause is the materials the house is made of, the formal cause is the architect’s plan, the efficient cause is the process of building it, and the final cause is to provide shelter and comfort. Natural objects, such as plants and animals, differ from artificial objects in that they have an internal source of change. All the causes of change in artificial objects are found outside the objects themselves, but natural objects can cause change from within.
Aristotle rejects the idea that chance constitutes a fifth cause, similar in nature to the other four. We normally talk about chance in reference to coincidences, where two separate events, which had their own causes, coincide in a way that is not explained by either set of causes. For instance, two people might both have their own reasons for being in a certain place at a certain time, but neither of these sets of reasons explains the coincidence of both people being there at the same time.
Final causes apply to nature as much as to art, so everything in nature serves a useful purpose. Aristotle argues against the views both of Democritus, who thinks that necessity in nature has no useful purpose, and of Empedocles, who holds an evolutionary view according to which only those combinations of living parts that are useful have managed to survive and reproduce themselves. If Democritus were right, there would be as many useless aspects of nature as there are useful, while Empedocles’ theory does not explain how random combinations of parts could come together in the first place.
Books III and IV examine some fundamental concepts of nature, starting with change, and then treating infinity, place, void, and time. Aristotle defines change as “the actuality of that which exists potentially, in so far as it is potentially this actuality.” That is, change rests in the potential of one thing to become another. In all cases, change comes to pass through contact between an agent and a patient, where the agent imparts its form to the patient and the change itself takes place in the patient.
Please wait while we process your payment