Books ordered by title: P
| Author | Title (Number of quotes) |
| Carl Sagan | Pale Blue Dot (2) |
| John Green | Paper Towns (5) |
| Isaac Asimov | Pebble in the Sky (2) |
| Simone Elkeles | Perfect Chemistry (3) |
| Stephen King | Pet Sematary (4) |
| Werner Heisenberg | Physics and Philosophy (3) |
| Michio Kaku | Physics of the Future (3) |
| Henry Ward Beecher | Plymouth Pulpit (2) |
| Benjamin Franklin | Poor Richard`s Almanack (3) |
| Charlaine Harris | Poppy Done to Death (4) |
| Sándor Márai | Portraits of a Marriage (10) |
| Vera Peiffer | Positive Thinking (4) |
| Mór Jókai | Pretty Michal (3) |
| Jane Austen | Pride and Prejudice (4) |
| Elizabeth Wurtzel | Prozac Nation (5) |
| Mark Twain | Pudd`nhead Wilson (2) |
| Terry Pratchett | Pyramids (2) |