No Opinion Has Ever Been Too Errant

The Desire To Understand The World And The Desire To Reform It Are The Two Great Engines Of Progress, Without Which Human Society Would Stand Still Or Retrogress.

Those Whose Lives Are Fruitful To Themselves, To Their Friends, Or To The World Are Inspired By Hope And Sustained By Joy: They See In Imagination The Things That Might Be And The Way In Which They Are To Be Brought Into Existence.

You May Reasonably Expect A Man To Walk A Tightrope Safely For Ten Minutes; It Would Be Unreasonable To Do So Without Accident For Two Hundred Years.

Civilized Life, If It Is To Be Stable, Must Provide A Harmless Outlets For The Impulses Which Our Remote Ancestors Satisfied In Hunting. In Australia, Where People Are Few, And Rabbits Are Many, I Watched The Whole Populace Satisfying The Primitive Impulse In The Primitive Manner By The Skilful Slaughter Of Many Thousands Of Rabbits.

Modern Life Cannot Be Constructed On . . . Physically Strenuous Principles. A Great Deal Of Work Is Sedentary, And Most Manual Work Exercises Only A Few Specialized Muscles.