Teach Principles Not Formulas.

Nature Has A Great Simplicity And Therefore A Great Beauty.

So Far As We Know, All The Fundamental Laws Of Physics, Like Newton's Equations, Are Reversible.

This Is Not Yet A Scientific Age.

Our Imagination Is Stretched To The Utmost, Not, As In Fiction, To Imagine Things Which Are Not Really There, But Just To Comprehend Those Things Which Are There.

Tell Your Son To Stop Trying To Fill Your Head With Science - For To Fill Your Heart With Love Is Enough!