Galileo Galilei (15 February 1564 – 8 January 1642) was an Italian polymath: astronomer, physicist, engineer, philosopher, and mathematician. He played a major role in the scientific revolution of the seventeenth century. His contributions to observational astronomy include the telescopic confirmation of the phases of Venus, the discovery of the four largest satellites of Jupiter, and the observation and analysis of sunspots.
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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.
We cannot teach people anything, we can only help them discover it within themselves.
All truths are easy to understand once they are discovered, the point is to discover them.
It vexes me when they would constrain science by the authority of the Scriptures and yet do not consider themselves bound to answer reason and experiment.
In questions of science the authority of a thousand is not worth the humble reasoning of a single individual.
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.
Where the senses fail us reason must step in.