One Mind: How Our Individual Mind is Part of a Greater Consciousness and Why it Matters (Larry Dossey)
Idealism
The Case Against Reality: How Evolution Hid the Truth from Our Eyes (Donald D. Hoffman)
Nature of the self
Why Buddhism is true (Robert Wright)
The Ego Trick (Julian Baggini)
Physics and spirituality
The Tao of Physics (Fritjof Capra)
You Are the Universe: Discovering Your Cosmic Self and Why It Matters (Deepak Chopra, Menas Kafatos)
Reality Unveiled: The Hidden Keys of Existence That Will Transform Your Life (and the World) (Ziad Masri)
Evidence for God
A Quantum Case For God (Dennis Zetting, Randi Zetting)
The Case for God: What religion really means (Karen Armstrong)
The Dawkins Delusion?: Atheist fundamentalism and the denial of the divine (Alister McGrath)
Why There Almost Certainly Is a God: Doubting Dawkins (Keith Ward)
God and physics
God and the New Physics (Paul Davies)
The God Franchise: A Theory of Everything (Alan H. Dawe)
The Physics of God: Unifying Quantum Physics, Consciousness, M-Theory, Heaven, Neuroscience and Transcendence (Selbie Joseph)
Advaita Vendanta
Reflections of the One Life: Daily Pointers to Enlightenment (Scott Kiloby)
Vedanta: A Simple Introduction (Pravrajika Vrajaprana)
Why God Permits Evil and How to Rise Above It (Paramahansa Yogananda)
Course in Miracles
A Return to Love: Reflections on the Principles of A Course in Miracles (Marianne Williamson)
Creativity & Wisdom
100-WHATS of CREATIVITY: One-hundred "What-if?" questions to spark your creativity, unmuck your mind, and break through your mental blocks. (Don The Idea Guy Snyder)
The Book of Beautiful Questions: The Powerful Questions That Will Help You Decide, Create, Connect, and Lead (Warren Berger)
The Best Advice in Six Words: Writers Famous and Obscure on Love, Sex, Money, Friendship, Family, Work, and Much More (Six-word Memoir) (Larry Smith)