Knowing Thyself, That Is The Greatest Wisdom.

Nothing Can Be Taught To A Man, Only It's Possibly To Help Him To Discover It Inside.

You Cannot Teach A Person Something He Does Not Already Know, You Can Only Bring What He Does Know To His Awareness.

The Universe Is A Grand Book Which Cannot Be Read Until One First Learns To Comprehend The Language And Become Familiar With The Characters In Which It Is Composed. It Is Written In The Language Of Mathematics.

The Book Of Nature Is Written In The Language Of Mathematics.

Philosophy Is Written In That Great Book Which Ever Lies Before Our Eyes — I Mean The Universe — But We Cannot Understand It If We Do Not First Learn The Language And Grasp The Symbols, In Which It Is Written.