Visual forms are not perceived differently from colors or brightness. They are sense qualities, and the visual character of geometry consists in these sense qualities.

If error is corrected whenever it is recognized as such, the path of error is the path of truth.

You see, there is no more purpose or meaning in the world than you put into it.

It appears that the solution of the problem of time and space is reserved to philosophers who, like Leibniz, are mathematicians, or to mathematicians who, like Einstein, are philosophers.

Philosophy is regarded by many as inseparable from speculation. ... Philosophy has proceeded from speculation to science.

We must... maintain that mathematical geometry is not a science of space insofar as we understand by space a visual structure that can be filled with objects - it is a pure theory of manifolds.

Occasionally one speaks... of signals or signal chains. It should be noted that the word signal means the transmission of signs and hence concerns the very principle of causal order.

...the mathematician uses an indirect definition of congruence, making use of the fact that the axiom of parallels together with an additional condition can replace the definition of congruence.

Great self-skills are self-confident, self-courage and self-steadiness.

Acting is somewhat mysteriously taught. There are so many different methods and systems and processes for teaching acting because it will always be an elusive art-form.

God requires not the doing of the commandments for their own sake, but the correction of the soul, for whose sake He established the commandments.

We only really know what is new, what suddenly introduces to our sensibility a change of tone which strikes us, that for which habit has not yet substituted its pale fac-similes.

The unsaid rule for living in a trailer park is: 'If the door's shut, don't come a-knockin.' But if it's open and you're walkin' by, feel free to say, 'Hello.'

I'm running for office, for Pete's sake, I can't have illegals.

We must move beyond an anemic view of our faith as something only personal and private, with no public dimension, and instead see it as the source of power that can change the world.

We can only love a person who eats what we eat.

I understand the all black or all white look (to be perfectly blunt, it's easy and you don't have to think about it very much) but would any of us really want to be one of those people?

Movie distribution may very well have migrated fully to digital form by then, making a huge dent in the need to print film and physically distribute content.