Plato, on writing:

Writing is the geometry of the soul.

- Plato.

Plato, on books:

A house that has a library in it has a soul.

- Plato.

Plato, on books:

 

A library of wisdom, is more precious than all wealth,

and all things that are desirable cannot be compared to it.
Whoever therefore claims to be zealous of truth, of happiness, of wisdom or knowledge, must become a lover of books.
– Plato.