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Our thoughts and imagination are the only real limits to our possibilities.

You have to allow a certain amount of time in which you are doing nothing in order to have things occur to you, to let your mind think.

Mind is consciousness which has put on limitations. You are originally unlimited and perfect. Later you take on limitations and become the mind.

The mind is a monkey, hopping around from thought to thought, image to image. Rarely do more than a few seconds go by in which the mind can remain single-pointed, empty.

Imagination makes us aware of limitless possibilities. How many of us haven't pondered the concept of infinity or imagined the possibility of time travel? In one of her poems, Emily Bronte likens imagination to a constant companion, but I prefer to think of it as a built-in entertainment system.

When an idea exclusively occupies the mind, it is transformed into an actual physical or mental state.

The most thought-provoking thing in our thought-provoking time is that we are still not thinking.

Human self-understanding changes with time, and so also human consciousness deepens.

Relativity challenges your basic intuitions that you've built up from everyday experience. It says your experience of time is not what you think it is, that time is malleable. Your experience of space is not what you think it is; it can stretch and shrink.