Well I am certainly wiser than this man. It is only too likely that neither of us has any knowledge to boast of; but he thinks that he knows something which he does not know, whereas I am quite conscious of my ignorance. At any rate it seems that I am wiser than he is to this small extent, that I do not think that I know what I do not know.

They are not only idle who do nothing, but they are idle also who might be better employed.

There is but one evil, ignorance.

As for me, all I know is I know nothing.

He is a man of courage who does not run away, but remains at his post and fights against the enemy.

To be uncertain is to be uncomfortable, but to be certain is to be ridiculous.

If measure and symmetry are absent from any composition in any degree, ruin awaits both the ingredients and the composition... Measure and symmetry are beauty and virtue the world over.