Ludwig Wittgenstein

If we take eternity to mean not infinite temporal duration, but timelessness, then eternal life belongs to those who live in the present.

Talent is a spring from which fresh water is constantly flowing. But this spring loses its value if it is not used in the right way.

Don't get involved in partial problems, but always take flight to where there is a free view over the whole single great problem, even if this view is still not a clear one

It used to be said that God could create anything except what would be contrary to the laws of logic. The truth is that we could not say what an "illogical" world would look like.

But all propositions of logic say the same thing. That is, nothing.

There can never be surprises in logic.

The solution of logical problems must be neat for they set the standard of neatness.

I act with complete certainty. But this certainty is my own.

If you tried to doubt everything you would not get as far as doubting anything. The game of doubting itself presupposes certainty.

You must always be puzzled by mental illness. The thing I would dread most, if I became mentally ill, would be your adopting a common sense attitude; that you could take it for granted that I was deluded

What is good is also divine. Queer as it sounds, that sums up my ethics. Only something supernatural can express the Supernatural.

Ideas too sometimes fall from the tree before they are ripe.

Where two principles really do meet which cannot be reconciled with one another, then each man declares the other a fool and a heretic

Hell isn't other people. Hell is yourself.

Some people's taste is to an educated taste as is the visual impression received by a purblind eye to that of a normal eye. Where a normal eye will see something clearly articulated, a weak eye will see a blurred patch of colour.

Everything ritualistic must be strictly avoided, because it immediately turns rotten. Of course a kiss is a ritual too and it isn't rotten, but ritual is permissible only to the extent that it is as genuine as a kiss.

It is difficult to describe paths of thought where there are already many paths laid down, and not fall into one of the grooves

Philosophy should make clear and delimit sharply the thoughts which otherwise are, as it were, opaque and blurred.