Philosophical problems arise when language goes on holiday

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

An image is not a picture, but a picture can correspond to it.

Knowledge is in the end based on acknowledgement.

Not only is there no guarantee of the temporal immortality of the human soul, that is to say of its eternal survival after death; but, in any case, this assumption completely fails to accomplish the purpose for which it has always been intended. Or is some riddle solved by my surviving forever? Is not this eternal life itself as much of a riddle as our present life?

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

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.