Great minds think alike. – Anon.

Thinking more than others about our own thoughts is not self-centeredness. It means that if asked whats on our mind, we are less likely to mention being aware of the world around us, and more likely to mention our inner reflections. But we are less likely to mention thinking about other people. – Elaine N. Aron

Thought is a kind of opium; it can intoxicate us, while still broad awake; it can make transparent the mountains and everything that exists. – Henri Frederic Amiel