I Learned Many Years Ago Never To

I Can Understand Your Aversion To The Use Of The Term 'religion' To Describe An Emotional And Psychological Attitude Which Shows Itself Most Clearly In Spinoza... I Have Not Found A Better Expression Than 'religious' For The Trust In The Rational Nature Of Reality That Is, At Least To A Certain Extent, Accessible To Human Reason.

I Prefer An Attitude Of Humility Corresponding To The Weakness Of Our Intellectual Understanding Of Nature And Of Our Own Being.

I Believe My Theory Of Relativity To Be True. But It Will Only Be Proved For Certain In 1981, When I Am Dead.

Hunger, Love, Pain, Fear Are Some Of Those Inner Forces Which Rule The Individual's Instinct For Self Preservation.

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