"Fables are not about advice for the future, but descriptions of the past."
History
"Reserve the right to think, for even to have the wrong thought is better than not to think at all."
Freedom
"Geometry will draw the soul toward truth and create the spirit of philosophy."
Knowledge
"Be kind, for everyone you meet is fighting a hard battle."
Kindness
"Life is an error unless you know what you are living for."
Life
"Ignorance is an evil weed, which dictators may cultivate among their subjects, but which no democracy can tolerate among its citizens."
Education
"I wish my students would think for themselves rather than believe what I tell them."
Wisdom
"The pursuit of truth should be the primary concern of the soul."
Truth
"Violence is the last refuge of the incompetent."
Peace
"Nothing is or can be, without a cause."
Philosophy
"Astronomy compels the soul to look upwards and leads us from this world to another."
Science
"The female mind is as capable as the male mind of understanding mathematics and philosophy."
"A scientist should allow facts to speak for themselves, without prejudice."
Science
"Education is the most powerful weapon which you can use to change the world."
Education
"The study of mathematics cultivates both the rational mind and the spirit."
Knowledge
"In every moment, there is an opportunity for transformation."
Change
"Truth is like the sun. You can shut it out for a time, but it ain't goin' away."
Truth
"The measure of intelligence is the ability to change."
Wisdom
"I have not been able to discover the secret of the work yet; I am still occupied with investigations."
Science
"Defend yourself; but do it in a way that does not require you to offend others."
Courage
"The mind needs exercise as much as the body needs food."
Education
"Seek wisdom, not because it will make you happy, but because it will make you whole."
Wisdom
"The greatest wealth is knowledge."
Knowledge
"Respect for life is the foundation of all virtue."
"The universe is a text written in the language of mathematics."
Science
"To understand the universe, you must understand mathematics."
Knowledge
"Hope is not the same as optimism; it is an active choice to believe in possibility."
Hope
"We are all part of the cosmic dance of creation."
Nature
"Do not fear death, for it is merely the end of one chapter and the beginning of another."
Death
"The pursuit of beauty in mathematics reveals the harmony of the universe."
Beauty