Youth Doesn't Take Advice.

I Speak Without Exaggeration When I Say That I Have Constructed 3,000 Different Theories In Connection With The Electric Light, Each One Of Them Reasonable And Apparently Likely To Be True. Yet Only In Two Cases Did My Experiments Prove The Truth Of My Theory. My Chief Difficulty Was In Constructing The Carbon Filament... Every Quarter Of The Globe Was Ransacked By My Agents, And All Sorts Of The Queerest Materials Used, Until Finally The Shred Of Bamboo, Now Utilized By Us, Was Settled Upon.

I Cannot Believe In The Immortality Of The Soul. No, All This Talk Of An Existence For Us, As Individuals, Beyond The Grave Is Wrong. It Is Born Of Our Tenacity Of Life - Our Desire To Go On Living - Our Dread Of Coming To An End.

The First Requisite Of Success Is The Ability To Apply Your Physical And Mental Energies To One Problem Without Growing Weary.

The Reason A Lot Of People Do Not Recognize Opportunity Is Because It Usually Goes Around Wearing Overalls Looking Like Hard Work.

Most Of My Ideas Belonged To Other People Who Never Bothered To Develop Them.