Authors — Quotes

Galileo Galilei Quotes: 11

I have never met a man so ignorant that I couldn't learn something from him.
I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use.
Letter to the Grand Duchess Christina
You cannot teach a man anything, you can only help him find it within himself.
In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual.
The sun, with all those planets revolving around it and dependent on it, can still ripen a bunch of grapes as if it had nothing else in the universe to do.
Measure what can be measured, and make measurable what cannot be measured.
My dear Kepler, what would you say of the learned here, who, replete with the pertinacity of the asp, have steadfastly refused to cast a glance through the telescope? What shall we make of this? Shall we laugh, or shall we cry?
Frammenti e lettere
See now the power of truth; the same experiment which at first glance seemed to show one thing, when more carefully examined, assures us of the contrary.
Discorsi E Dimostrazioni Matematiche: Intorno a Due Nuoue Scienze, Attenenti Alla Mecanica & I Movimenti Locali
By denying scientific principles, one may maintain any paradox.
Names and attributes must be accommodated to the essence of things, and not the essence to the names, since things come first and names afterwards.
Discoveries and Opinions of Galileo
I have been in my bed for five weeks, oppressed with weakness and other infirmities from which my age, seventy four years, permits me not to hope release. Added to this (proh dolor! [O misery!]) the sight of my right eye — that eye whose labors (dare I say it) have had such glorious results — is for ever lost. That of the left, which was and is imperfect, is rendered null by continual weeping.
Lettere di Galileo Galilei