Heaven knows what seeming nonsense may not tomorrow be demonstrated truth.

Algebra is the intellectual instrument which has been created for rendering clear the quantitative aspects of the world.

Without adventure all civilization is full of decay. Adventure rarely reaches its predetermined end. Columbus never reached China.

You cannot evade quantity. You may fly to poetry and music, and quantity and number will face you in your rhythms and your octaves.

I regret that it has been necessary for me in this lecture to administer a large dose of four-dimensional geometry. I do not apologize, because I am really not responsible for the fact that nature in its most fundamental aspect is four-dimensional. Things are what they are.

Vedanta is the most impressive metaphysics the human mind has conceived.

Human life is driven forward by its dim apprehension of notions too general for its existing language.