To every action there is always opposed an equal reaction: or, the mutual actions of two bodies upon each other are always equal, and directed to contrary parts.
I frame no hypotheses; for whatever is not deduced from the phenomena is to be called an hypothesis; and hypotheses, whether metaphysical or physical, whether of occult qualities or mechanical, have no place in experimental philosophy.
- Topic: Thinking
- Photo: Jeffrey Benjamin
More Quotes from Isaac Newton
Plato is my friend; Aristotle is my friend, but my greatest friend is truth.
A man may imagine things that are false, but he can only understand things that are true.
To me there has never been a higher source of earthly honor or distinction than that connected with advances in science.
If I have ever made any valuable discoveries, it has been owning more to patient attention, than to any other talent.
The change in motion is proportional to the motive force impressed; and is made in the direction of the right line in which that force is impressed.
Every body continues in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed upon it.
More on Thinking
And if all others accepted the lie which the Party imposed—if all records told the same tale—then the lie passed into history and became truth.
If you want material prosperity, you must first think prosperity thoughts, and then make a habit of doing so, for the thing that keeps most people poor is the sheer habit of poverty thinking.
The fact that man knows right from wrong proves his intellectual superiority to the other creatures; but the fact that he can do wrong proves his moral inferiority to any creature that cannot.
You are the only person who thinks in your mind. You are the power and authority in your world.