The mathematician who pursues his studies without clear views of this matter, must often have the uncomfortable feeling that his paper and pencil surpass him in intelligence.

Thing, body, matter, are nothing apart from the combinations of the elements, - the colours, sounds, and so forth - nothing apart from their so-called attributes.

A colour is a physical object as soon as we consider its dependence, for instance, upon its luminous source, upon other colours, upon temperatures, upon spaces, and so forth.

Strange as it may sound, the power of mathematics rests on its evasion of all unnecessary thought and on its wonderful saving of mental operations.

Science is the most complete presentment of facts with the least expenditure of thought

I can accept the theory of relativity as little as I can accept the existence of atoms and other such dogmas.

Man is pre-eminently endowed with the power of voluntarily and consciously determining his own point of view.

What Mach calls a thought experiment is of course not an experiment at all. At bottom it is a grammatical investigation.

Many an article that I myself penned twenty years ago impresses me now as something quite foreign to myself.

Science always has its origin in the adaptation of thought to some definite field of experience.

Bodies do not produce sensations, but complexes of elements (complexes of sensations) make up bodies.

What reaches the heart without going through the mind is likely to bounce back and put the mind out of business.

Idealism + Inaction = Depression

I didn't know the names of the flowers - now my garden is gone.

You really can't take a cat and turn it into a dog, or try and get lemons off an apple tree, or what have you.

The dread of evil is a much more forcible principle of human actions than the prospect of good.

You never forget the discovery years. First kisses. The first time you try certain foods.

From what I have seen, I am driven to the conclusion that religion is only good for good people.

When I looked at things for what they are I was fool enough to persist in my folly and found that each photograph was a mirror of my Self.

If you miss someone too much you turn into them... though it doesn't seem to work for the Christian Church.

Trust me, lots of guys bring women up to their rooms when their wives are aren't there and get massages, it happens all the time. It means 'nothing'.