“Give me a place to stand, and I will move the Earth.”

Give me but a firm spot on which to stand, and I shall move the earth.

Man has always learned from past. After all, you can’t learn history in reverse.

There are things which seem incredible to most men who have not studied mathematics.

Don’t disturb my circles!

Mathematics reveals its secrets only to those who approach it with pure love, for its own beauty.

Rise above oneself and grasp the world.

Give me a place to stand, and a lever long enough, and I will move the world.

Give me a lever long enough and a fulcrum on which to place it, and I shall move the world.

He who knows how to speak, knows also when.

Those who claim to discover everything but produce no proofs of the same may be confused as having actually pretended to discover the impossible.

Fellow, stand away from my diagram.

Hope is a powerful weapon, and no one power on earth can deprive you of.

Man is not on the earth solely for his own happiness. He is there to realize great things for humanity.

The artist is a receptacle for emotions that come from all over the place: from the sky, from the earth, from a scrap of paper, from a passing shape, from a spider’s web.

The earth, in fair and grateful exchange, pays back to the moon an illumination similar to that which it receives from her throughout nearly all the darkest gloom of the night.

Once you have tasted flight, you will forever walk the earth with your eyes turned skyward, for there you have been, and there you will always long to return.

My first wish is to see this plague of mankind, war, banished from the earth,

You little fool. You thought you could defeat the most powerful being on Earth.

Please, don’t worry so much. Because in the end, none of us have very long on this Earth. Life is fleeting.