Mathematical Logic Quotations

Here at Wisconsin we didn't get an undergraduate course in mathematical logic until the '60s.

I am allowed to use plain English because everybody knows that I could use mathematical logic if I chose.

Ordinary language is totally unsuited for expressing what physics really asserts, since the words of everyday life are not sufficiently abstract. Only mathematics and mathematical logic can say as little as the physicist means to say.

We never know what we are talking about.

To understand this for sense it is not required that a man should be a geometrician or a logician, but that he should be mad.

We used to think that if we knew one, we knew two, because one and one are two. We are finding that we must learn a great deal more about 'and'.

Much of what I make is geometric, and has a kind of almost mathematical logic to the form

Contrariwise, if it was so, it might be; and if it were so, it would be; but as it isn't, it ain't. That's logic.

The fact that all Mathematics is Symbolic Logic is one of the greatest discoveries of our age; and when this fact has been established, the remainder of the principles of mathematics consists of the analysis of Symbolic Logic itself.

Only mathematics and mathematical logic can say as little as the physicist means to say.