Albert Schweitzer:

The greatest challenge of the day is: how to bring about a revolution of the heart, a revolution which has to start with each one of us.

— Albert Schweitzer Modern

Missionary, Nobel laureate

Cited in 'Reverence for Life'

Undated

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"The greatest wisdom is to know that you know nothing."

"Ethics is nothing else than reverence for life."

"The greatest good is to do good to others."

"The human race is a race of slaves, and it will remain so until it learns to think for itself."

"The greatest thing is to live your life as if it were a work of art."

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