Pure and complete sorrow is as impossible as pure and complete joy. War and Peace

I have always thought that clarity is a form of courtesy that the philosopher owes; moreover, this discipline of ours considers it more truly a matter of honor today than ever before to be open to all minds … This is different from the individual sciences which increasingly [interpose] between the treasure of their discoveries and the curiosity of the profane the tremendous dragon of their closed terminology. History as a System

The bow cannot always stand bent, nor can human frailty subsist without some lawful recreation. Don Quixote

He who is brave is free. Ad Lucilium Epistulae Morales