If We Don't Know Our Own History,

There Are Many Great Authors Of The Past Who Have Survived Centuries Of Oblivion And Neglect, But It Is Still An Open Question Whether They Will Be Able To Survive An Entertaining Version Of What They Have To Say.

There Are No Dangerous Thoughts; Thinking Itself Is Dangerous.

... We May Remember What The Romansthought A Cultivated Person Ought To Be: One Who Knows How To Choose His Company Among Men, Among Things, Among Thoughts, In The Present As Well As In The Past.

For Excellence, The Presence Of Others Is Always Required.

The Individual Who Has Been Liberated By Reason Is Always Running Head-on Into A World, A Society, Whose Past In The Shape Of 'prejudices' Has A Great Deal Of Power; He Is Forced To Learn That Past Reality Is Also A Reality.