Reason Is Intuition's Servant.

Do You Really Believe That The Moon Isn’t There When Nobody Looks?

Everybody Acts Not Only Under External Compulsion But Also In Accordance With Inner Necessity.

I Have No Special Talent. I Am Only Passionately Curious.

The Longing To Behold This Pre-established Harmony [of Phenomena And Theoretical Principles] Is The Source Of The Inexhaustible Patience And Perseverance With Which Planck Has Devoted Himself ... The State Of Mind Which Enables A Man To Do Work Of This Kind Is Akin To That Of The Religious Worshiper Or The Lover; The Daily Effort Comes From No Deliberate Intention Or Program, But Straight From The Heart.

There Is Possibility In Every Difficulty.