If any philosopher had been asked for a definition of infinity, he might have produced some unintelligible rigmarole, but he would certainly not have been able to give a definition that had any meaning at all.
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Ch. 5: Mathematics and the MetaphysiciansBertrand Russell
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If the definition of simultaneity is given from a moving system, the spherical surface will result when Einstein's definition with ? = 1/2 is used, since it is this definition which makes the velocity of light equal in all directions.
Hans Reichenbach
The election's coming just in a couple of weeks, and I hope you're praying about your vote. One of the propositions, of course, that I want to mention is Proposition 8, which is the proposition that had to be instituted because the courts threw out the will of the people. And a court of four guys actually voted to change a definition of marriage that has been going for 5,000 years.
Now let me say this really clearly: we support Proposition 8 — and if you believe what the Bible says about marriage, you need to support Proposition 8. I never support a candidate, but on moral issues I come out very clear.
This is one thing, friends, that all politicians tend to agree on. Both John McCain and Barack Obama, I flat out asked them "what is your definition of marriage?" and they both said the same thing. It is the traditional, historic, universal definition of marriage: one man and one woman, for life. … There are about 2% of Americans are homosexual or gay, lesbian people. We should not let 2% of the population determine — to change a definition of marriage that has been supported by every single culture, and every single religion, for 5,000 years. … So I urge you to support Proposition 8, and pass that word on. I'm going to be sending out a note to pastors on what I believe about this, but everybody knows what I believe about it, and they heard me at the civil forum when I asked both Obama and McCain on their views.Rick Warren
The smell of subjectivity clings to the mechanical definition of complexity as stubbornly as it sticks to the definition of information.
Hans Christian von Baeyer
The definition of definition is at bottom just what the maxim of pragmatism expresses.
Charles Sanders Peirce
A definition, if it is to be called perfect, must explain the inmost essence of a thing, and must take care not to substitute for this any of its properties. In order to illustrate my meaning, without taking an example which would seem to show a desire to expose other people's errors, I will choose the case of something abstract, the definition of which is of little moment. Such is a circle. If a circle be defined as a figure, such that all straight lines drawn from the center to the circumference are equal, every one can see that such a definition does not in the least explain the essence of a circle, but solely one of its properties. Though, as I have said, this is of no importance in the case of figures and other abstractions, it is of great importance in the case of physical beings and realities: for the properties of things are not understood so long as their essences are unknown. If the latter be passed over, there is necessarily a perversion of the succession of ideas which should reflect the succession of nature, and we go far astray from our object.
Baruch Spinoza
Russell, Bertrand
Russell, Bill
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