Progress is not an illusion; it happens, but it is slow and invariably disappointing.

Now he has departed from this strange world a little ahead of me. That means nothing. People like us, who believe in physics, know that the distinction between past, present, and future is only a stubbornly persistent illusion.

Reality is merely an illusion, albeit a very persistent one.

Young people all over the world are very frustrated. They are very disillusioned. Many of them are turning their back on religion. They are walking away from the faith of their parents, and most of this is because religion has failed them.