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.

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.

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.

Listen: being dead is not worse than being alive. It is different though. You could say the view is larger.

Back home the black women are all beautiful

Tearless grief bleeds inwardly.

The role of dissident is not, and should not be, a claim of membership in a communion of saints. In other words, the more fallible the mammal, the truer the example.

You translate everything-whether physical, mental, or spiritual into muscular tension.

You've got the brain-washed, that's the Democrats, and the brain-dead, that's the Republicans!

Complacent ignorance is the most lethal sickness of the soul

Enough of this foreign fiasco distraction. Get back to work. It is time to bomb Obamacare.

I am for everything starting into full-blown perfection at once.

The war against war is going to be no holiday excursion or camping party.