I Rarely Think In Words At All.

I Never Teach My Pupils, I Only Attempt To Provide The Conditions In Which They Can Learn.

It Is The Theory That Decides What Can Be Observed.

Only One Who Devotes Himself To A Cause With His Whole Strength And Soul Can Be A True Master. For This Reason Mastery Demands All Of A Person.

Nothing Happens Unless Something Moves.

When The Special Theory Of Relativity Began To Germinate In Me, I Was Visited By All Sorts Of Nervous Conflicts... I Used To Go Away For Weeks In A State Of Confusion.