Knowledge is the food of the soul.

And what, Socrates, is the food of the soul? Surely, I said, knowledge is the food of the soul.

Either we shall find what it is we are seeking or at least we shall free ourselves from the persuasion that we know what we do not know.

To appreciate the beauty of a snow flake, it is necessary to stand out in the cold.

He who not being inspired and having no touch of madness in his soul comes to the door and thinkshe will get into the temple by the help of art - he, I say, and his poetry are not admitted.

Knowledge is true opinion.