Oral delivery aims at persuasion and making the listener believe they are converted. Few persons are capable of being convinced the majority allow themselves to be persuaded.

Sing it not in mournful numbers.

Nothing is true, but that which is simple.

To know where a thing is we must have found it.

All things are only transitory.

A great artist... must be shaken by the naked truths that will not be comforted. This divine discontent, this disequilibrium, this state of inner tension is the source of artistic energy.

Only he who finds empiricism irksome is driven to method.