To Fear Love Is To Fear Life.

Is There Any Knowledge In The World Which Is So Certain That No Reasonable Man Could Doubt It?

Physics Is Mathematical Not Because We Know So Much About The Physical World, But Because We Know So Little; It Is Only Its Mathematical Properties That We Can Discover.

Nothing Of Importance Is Ever Achieved Without Discipline. I Feel Myself Sometimes Not Wholly In Sympathy With Some Modern Educational Theorists, Because I Think That They Underestimate The Part That Discipline Plays. But The Discipline You Have In Your Life Should Be One Determined By Your Own Desires And Your Own Needs, Not Put Upon You By Society Or Authority.

Love Cannot Exists As A Duty; To Tell A Child That It Ought To Love Its Parents And Its Brother And Sisters Is Utterly Useless, If Not Worse.

A Man's Acts Are Partly Determined By Spontaneous Impulse, Partly By The Conscious And Unconscious Effects Of The Various Groups To Which He Belongs.