All truths are easy to understand once they are discovered the point is to discover them.

— Galileo Galilei

And, believe me, if I were again beginning my studies, I should follow the advice of Plato and start with mathematics.

— Galileo Galilei

By denying scientific principles, one may maintain any paradox.

— Galileo Galilei

Facts which at first seem improbable will, even on scant explanation, drop the cloak which has hidden them and stand forth in naked and simple beauty.

— Galileo Galilei

He who looks the higher is the more highly distinguished, and turning over the great book of nature (which is the proper object of philosophy) is the way to elevate one's gaze.

— Galileo Galilei

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.

— Galileo Galilei

If I were again beginning my studies, I would follow the advice of Plato and start with mathematics.

— Galileo Galilei

If the Earth were not subject to any change I would consider the Earth a big but useless body in universe, paralyzed...superfluous and unnatural. Those who so exalt incorruptibility, changeability and the like, are, I think, reduced to saying such things both because of inordinate desire they have to live for a long time and because of the terror they have of death...they do not realize that if men were immortal, they would have never come into the world.

— Galileo Galilei

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 (pro dolor! [O misery!]) The sight of my right eye — that eye whose labors (dare I say it) have had such glorious results — is forever lost. That of the left, which was and is imperfect, is rendered null by continual weeping.

— Galileo Galilei

I have never met a man so ignorant that I couldn't learn something from him.

— Galileo Galilei