Knowledge Of What Is Does Not Open

Man Owes His Strength In The Struggle For Existence To The Fact That He Is A Social Animal.

The Years Of Anxious Searching In The Dark, With Their Intense Longing, Their Alternations Of Confidence And Exhaustion And The Final Emergence Into The Light -- Only Those Who Have Experienced It Can Understand It.

A Human Being Is A Part Of The Whole Called By Us Universe; A Part Limited In Time And Space. He Experiences Himself, His Thoughts, And His Feelings As Something Separate From The Rest - A Kind Of Optical Delusion Of Consciousness.

In Theory, Theory And Practice Are The Same. In Practice, They Are Not.

What A Deep Faith In The Rationality Of The Structure Of The World And What A Longing To Understand Even A Small Glimpse Of The Reason Revealed In The World There Must Have Been In Kepler And Newton To Enable Them To Unravel The Mechanism Of The Heavens In Long Years Of Lonely Work!