To Do Easily What Is Difficult For

What We Do Not Understand We Have No Right To Judge

It Gives Liberty And Breadth To Thought, To Learn To Judge Our Own Epoch From The Point Of View Of Universal History, History From The Point Of View Of Geological Periods, Geology From The Point Of View Of Astronomy.

To Be Always Ready A Man Must Be Able To Cut A Knot, For Everything Cannot Be Untied.

Time Is But The Space Between Our Memories; As Soon As We Cease To Perceive This Space, Time Has Disappeared.

Every Situation Is An Equilibrium Of Forces; Every Life Is A Struggle Between Opposing Forces Working Within The Limits Of A Certain Equilibrium