All progress in knowledge takes place through the correction of that which has been received on authority.

A plate is distasteful to a cat, a newspaper still worse they like to eat sticky pieces of meat sitting on a cushioned chair or a nice Persian rug.

The cat is, above all things, a dramatist.

... all progress in knowledge takes place through the correction of that which has been received on authority ... without the huge body of traditional knowledge, accurate and inaccurate together, there would be nothing even to correct. Progress is not made in spite of authority, but by means of it.