As the area of light expands, so does the perimeter of darkness.

Scientists investigate that which already is; Engineers create that which has never been.

The only justification for our concepts and systems of concepts is that they serve to represent the complex of our experiences; beyond this they have not legitimacy.

All religions, arts and sciences are branches of the same tree. All these aspirations are directed toward ennobling man's life, lifting it from the sphere of mere physical existence and leading the individual towards freedom.

Intelligence is not the ability to store information, but to know where to find it.

Intellectual growth should commence at birth and cease only at death.

Conviction is a good motive, but a bad judge.