Reading has been a part of my life before I even knew how. I'm always looking for new titles, so feel free to suggest some!
My life-long favourites:
The Emperor of All Maladies by Siddhartha Mukherjee
Ender's Game by Orson Scott Card
Lord of the Rings by J.R.R. Tolkien
The Chronicles of Narnia by C.S. Lewis
The Time Quartet by Madeline L'Engle
Gossamer by Lois Lowery
Biographies:
Walking Miracle (autobiography) by Art Sanborn
Amazing Grace (William Wilberforce) by Eric Metaxas
Pastor, Martyr, Prophet, Spy (Dietrich Bonhoeffer) by Eric Metaxas
Here I Stand (Martin Luther) by Roland H. Bainton
Seven Men and the Secret of Their Greatness (compilation) by Eric Metaxas
Through the Gates of Splendor (autobiography) by Elizabeth Elliot
Barefoot Leadership (compilation) by Alvin Ung
William Wilberforce (infer the obvious...) by William Hague
William Pitt (ditto) by William Hague
Surprised by Joy (autobiography) by C. S. Lewis
The Scariest Place in the World (autobiography) by James Brady
History/Historical Fiction:
The Devil and the White City by Eric Larson
The Garden of the Beasts by Eric Larson
With the Heart of a King by Benton Rain Patterson
Apologetics:
Mere Christianity by C. S. Lewis
Screwtape Letters by C. S. Lewis
The Confessions by St. Augustine of Hippo
The Reason for God by Timothy Keller
Science Fiction:
The Space Trilogy by C. S. Lewis
Starship Troopers by Robert Heinlein
Ender's Shadow by Orson Scott Card
Speaker for the Dead by Orson Scott Card
Fahrenheit 451 by Ray Bradbury
The Man Who Was Thursday by G.K. Chesterton
Fantasy:
Artemis Fowl Series by Eoin Colfer
Airman by Eoin Colfer
Til We Have Faces by C. S. Lewis
The Silmarillion by J. R. R. Tolkien
Beowulf by Unknown (trans. Seamus Heaney)
The Divine Comedy by Dante Alighieri
The Odyssey by Homer
The Iliad by Homer
The Aeneid by Vergil (trans. Frederick Ahl)