G. M. Trevelyan

Never tell a young person that anything cannot be done. God may have been waiting centuries for someone ignorant enough of the impossible to do that very thing.

What is easy to read has been difficult to write. The labour of writing and rewriting, correcting and recorrecting, is the due exacted by every good book from its author, even if he knows from the beginning exactly what he wants to say. A limpid style is invariably the result of hard labour, and the easily flowing connection of sentence with sentence and paragraph with paragraph has always been won by the sweat of the brow.

Since history has no properly scientific value, its only purpose is educative. And if historians neglect to educate the public, if they fail to interest it intelligently in the past, then all their historical learning is valueless except in so far as it educates themselves.