Browse Quotes
1,161 quotes
That which does not kill us makes us stronger.
Friedrich Nietzsche
Philosophy
Sapere aude! Have courage to use your own understanding!
Immanuel Kant
Philosophy
A journey of a thousand miles begins with a single step.
Lao Tzu
Philosophy
Our greatest glory is not in never falling, but in rising every time we fall.
Confucius
Philosophy
The unexamined life is not worth living.
Plato
Philosophy
The unexamined life is not worth living.
Socrates
Philosophy
It was a completely new type of astronomical object. I was very excited, but also very worried, because it was so unexpected.
Jocelyn Bell Burnell
Astronomy
The good thing about science is that it's true whether or not you believe in it.
Neil deGrasse Tyson
Astronomy
The universe is not only queerer than we suppose, but queerer than we can suppose.
Cecilia Payne-Gaposchkin
Astronomy
We are like children who have found a puzzle, and we are trying to put it together, but we don't know what the picture is supposed to be.
Vera Rubin
Astronomy
The heavens are spherical, and move as a sphere.
Ptolemy
Astronomy
Let no one who is not a geometer enter here.
Tycho Brahe
Astronomy
The history of astronomy is a history of receding horizons.
Edwin Hubble
Astronomy
I much prefer the sharpest criticism of a single intelligent man to the thoughtless approval of the masses.
Johannes Kepler
Astronomy
To know that we know what we know, and to know that we do not know what we do not know, that is true knowledge.
Nicolaus Copernicus
Astronomy
Reverence for life is the highest court of appeal.
Albert Schweitzer
Medicine
Corpora non agunt nisi fixata.
Paul Ehrlich
Medicine
It is not easy to be a pioneer—but oh, it is glorious!
Elizabeth Blackwell
Medicine
The good physician treats the disease; the great physician treats the patient who has the disease.
William Osler
Medicine
When a wound is treated with carbolic acid, the putrefactive changes are arrested, and the wound heals without suppuration.
Joseph Lister
Medicine