Intellect is invisible to the man who has none.

All the intelligence in the world is useless to the one who has none.

Intelligence did not figure largely in anything he did and was often conspicuously absent.

they will be hearers of many things and will have learned nothing; they will appear to be omniscient and will generally know nothing;

Men simply don’t think.” And

I have met many minds able to store and translate a pregnantly large amount of information, yet they haven't an ounce of talent for wisdom or the appreciation of passion.

For though men be ignorant, yet they are men

Bold knaves thrive without one grain of sense,
But good men starve for want of impudence.

Abundance of knowledge does not teach men to be wise.

Intelligent men are cruel. Stupid men are monstrously cruel.

No brain at all, some of them [people], only grey fluff that's blown into their heads by mistake, and they don't Think.

A great many men are mad, and no one knows it. They do not know it themselves

What luck for rulers that men do not think.

The intelligent man finds everything laughable, the sensible man hardly anything.