Albert Einstein quotes (German born American Physicist who developed the special and general theories of relativity. Nobel Prize for Physics in 1921. 1879-1955)
S. Gudder quotes
Plato quotes (Ancient Greek Philosopher He was the world's most influential philosopher. 428 BC-348 BC)
Leo Nikolaevich Tolstoy quotes (Russian moral Thinker, Novelist and Philosopher, notable for his influence on Russian literature and politics. 1828-1910)
Aristotle quotes (Ancient Greek Philosopher, Scientist and Physician, 384 BC-322 BC)
