To be humane, we must ever be ready to pronounce that wise, ingenious and modest statement 'I do not know'.

Galileo Galilei

Two truths cannot contradict one another.

Galileo Galilei

Where the senses fail us, reason must step in.

Galileo Galilei

Nature is written in mathematical language.

Galileo Galilei

Holy Scripture could never lie or err...its decrees are of absolute and inviolable truth.

Galileo Galilei

There are those who reason well, but they are greatly outnumbered by those who reason badly.

Galileo Galilei

In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual.

Galileo Galilei

We cannot teach people anything; we can only help them discover it within themselves.

Galileo Galilei

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

Galileo Galilei

Philosophy itself cannot but benefit from our disputes, for if our conceptions prove true, new achievements will be made; if false, their refutation will further confirm the original doctrines.

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

The laws of nature are written by the hand of God in the language of mathematics.

Galileo Galilei