There are no chaste minds. Minds copulate wherever they meet.

There are times when I long to sweep away half the things I am expected to learn; for the overtaxed mind cannot enjoy the treasure it has secured at the greatest cost. ... When one reads hurriedly and nervously, having in mind written tests and examinations, one's brain becomes encumbered with a lot of bric-a-brac for which there seems to be little use. At the present time my mind is so full of heterogeneous matter that I almost despair of ever being able to put it in order. Whenever I enter the region of my mind I feel like the proverbial bull in the china shop. A thousand odds and ends of knowledge come crashing about my head like hailstones, and when I try to escape them, theme goblins and college nixies of all sorts pursue me, until I wish – oh, may I be forgiven the wicked wish! – that I might smash the idols I came to worship.

The mind is not a book, to be opened at will and examined at leisure. Thoughts are not etched on the inside of skulls, to be perused by an invader. The mind is a complex and many-layered thing, Potter… or at least, most minds are…

My illusions about the world caused me to think that in order to benefit by my reading I ought to possess all the knowledge the book presupposed. I was very far indeed from imagining that often the author did not possess it himself, but had extracted it from other books, as and when he needed it. This foolish conviction forced me to stop every moment, and to rush incessantly from one book to another; sometimes before coming to the tenth page of the one I was trying to read I should, by this extravagant method, have had to run through whole libraries. Nevertheless I stuck to it so persistently that I wasted infinite time, and my head became so confused that I could hardly see or take in anything.

Is there anywhere on earth exempt from these swarms of new books? Even if, taken out one at a time, they offered something worth knowing, the very mass of them would be an impediment to learning from satiety if nothing else

Ah yes, the head is full of books. The hard part is to force them down through the bloodstream and out through the fingers.

Above my cradle loomed the bookcase where/ Latin ashes and the dust of Greece/ mingled with novels, history, and verse/ in one dark Babel. I was folio-high/ when I first heard the voices.

Here you discover that so long as books are kept open, then minds can never be closed.

A Lumberhouse of books in ev'ry head,
For ever reading, never to be read.

There are some people who read too much: the bibliobibuli. I know some who are constantly drunk on books, as other men are drunk on whiskey or religion. They wander through this most diverting and stimulating of worlds in a haze, seeing nothing and hearing nothing.

It is impossible for individuals to examine the huge number of new books that are being published every day

Books have led some to learning and others to madness.

Books are the bees which carry the quickening pollen from one to another mind.

You can burn my books and the books of the best minds in Europe, but the ideas in them have seeped through a million channels and will continue to quicken other minds.