Logic must look after itself. In a certain sense, we cannot make mistakes in logic.

What is your aim in philosophy? To show the fly the way out of the fly-bottle.

If a lion could talk, we could not understand him.

One of the most misleading representational techniques in our language is the use of the word 'I.'

A man's thinking goes on within his consciousness in a seclusion in comparison with which any physical seclusion is an exhibition to public view.

A philosophical problem has the form: I don't know my way about.

A philosopher who is not taking part in discussions is like a boxer who never goes into the ring.

Our greatest stupidities may be very wise.

Whereof one cannot speak, thereof one must be silent.

The common behavior of mankind is the system of reference by means of which we interpret an unknown language.

An inner process stands in need of outward criteria.

Logic takes care of itself; all we have to do is to look and see how it does it.

I don't know why we are here, but I'm pretty sure that it is not in order to enjoy ourselves.

The logic of the world is prior to all truth and falsehood.

The human body is the best picture of the human soul.

It is one of the chief skills of the philosopher not to occupy himself with questions which do not concern him.

Man has to awaken to wonder - and so perhaps do peoples. Science is a way of sending him to sleep again.

For a truly religious man nothing is tragic.

Philosophy is a battle against the bewitchment of our intelligence by means of language.

Someone who knows too much finds it hard not to lie.

Propositions show what they say: tautologies and contradictions show that they say nothing.

There are remarks that sow and remarks that reap.

The limits of my language means the limits of my world.

It is so characteristic, that just when the mechanics of reproduction are so vastly improved, there are fewer and fewer people who know how the music should be played.

Resting on your laurels is as dangerous as resting when you are walking in the snow. You doze off and die in your sleep.

One often makes a remark and only later sees how true it is.

Philosophy is not a theory but an activity.

A confession has to be part of your new life.

Nothing is so difficult as not deceiving oneself.

It seems to me that, in every culture, I come across a chapter headed "Wisdom." And then I know exactly what is going to follow: "Vanity of vanities, all is vanity."

The real discovery is the one which enables me to stop doing philosophy when I want to. The one that gives philosophy peace, so that it is no longer tormented by questions which bring itself into question.

When one is frightened of the truth then it is never the whole truth that one has an inkling of.

Uttering a word is like striking a note on the keyboard of the imagination.

Never stay up on the barren heights of cleverness, but come down into the green valleys of silliness.

You learned the concept 'pain' when you learned language.

I sit astride life like a bad rider on a horse. I only owe it to the horse's good nature that I am not thrown off at this very moment.

If people never did silly things nothing intelligent would ever get done.

Knowledge is in the end based on acknowledgement.

A serious and good philosophical work could be written consisting entirely of jokes.

A new word is like a fresh seed sown on the ground of the discussion.

A picture is a fact.

What can be shown, cannot be said.

The world is independent of my will.

It is an hypothesis that the sun will rise tomorrow: and this means that we do not know whether it will rise.

Logic must look after itself. In a certain sense, we cannot make mistakes in logic.

Philosophy is like trying to open a safe with a combination lock: each little adjustment of the dials seems to achieve nothing, only when everything is in place does the door open.

Death is not an event in life: we do not live to experience death. If we take eternity to mean not infinite temporal duration but timelessness, then eternal life belongs to those who live in the present.

Humor is not a mood but a way of looking at the world. So if it is correct to say that humor was stamped out in Nazi Germany, that does not mean that people were not in good spirits, or anything of that sort, but something much deeper and more important.

The face is the soul of the body.