Galileo Galilei Quotes

The human mind has no frontiers, it extends proportionately as the universe displays itself; man, then, can and must attempt all, and he needs only time in order to know all

In my opinion, there is no aspect of reality beyond the reach of the human mind.

The limit of man s knowledge in any subject possesses a high interest which is perhaps increased by its close neighbourhood to the realms of imagination.

Don't you find that the more you know, the more you don't know and can't ever learn because there's too much stuff out there?

Science is like a flashlight in the hands of people living in a huge balloon. They can illuminate anything in the balloon, but cannot shine it outside the balloon to see where it is floating - or if it is floating at all.

Do not imagine that what we have said of the insufficiency of our understanding and of its limited extent is an assertion founded only on the Bible: for philosophers likewise assert the same, and perfectly understand it,- without having regard to any religion or opinion.

Human knowledge is dark and uncertain; philosophy is dark, astrology is dark, and geometry is dark.

There's no reason for your imagination to be fettered by money.

The power of imagination makes us infinite.

This means that no single logic is strong enough to support the total construction of human knowledge.

If man made himself the first object of study, he would see how incapable he is of going further. How can a part know the whole?

The human mind will not be confined to any limits.

Nothing that the mind of man can conceive is impossible.

There are no constraints on the human mind, no walls around the human spirit, no barriers to our progress except those we ourselves erect.

The farther reason looks the greater is the haze in which it loses itself.

Whether that coherence obtains universally is a question that need not be answered here since only those parts where the coherence has actually been found become part of Science.

There's more than enough in the world I am currently writing about to last for several lifetimes of writing.

The greater the knowledge, the greater the doubt.

I shall reconsider human knowledge by starting from the fact that we can know more than we can tell.

The journey is difficult, immense. We will travel as far as we can, but we cannot in one lifetime see all that we would like to see or to learn all that we hunger to know.

The task of science is to stake out the limits of the knowable, and to center consciousness within them.

What science cannot discover, mankind cannot know.

It is not for man to follow the trail of truth too far, since by so doing he entirely loses the directing compass of his mind.

To inquisitive minds like yours and mine the reflection that the quantity of human knowledge bears no proportion to the quantity of human ignorance must be in one view rather pleasing, viz., that though we are to live forever we may be continually amused and delighted with learning something new.

For us scientists, on the other wing, life is not quite so simple. Because we learn the unknown. Unlike, hah-hah, our esteemed friends the philosophers, who learn the unknowable.