A deed happens in a definite place at a definite time, but if it be sufficiently great and pregnant, its virtue radiates everywhere in time and space.

Men of science have made abundant mistakes of every kind; their knowledge has improved only because of their gradual abandonment of ancient errors, poor approximations, and premature conclusions.

The most malicious kind of hatred is that which is built upon a theological foundation.

Erudition without pedantry is as a rare as wisdom itself.

Scientific achievements seem evanescent, because the very progress of science causes their supersedure; yet some of them are of so fundamental a nature that they are immortal in a deeper way.

The whole iconography of ancient science is simply the fruit of wishful thinking.

From the humanistic point of view every human achievement is unforgettable and immortal in its essence, even if it is replaced by a "better" one.

There are but few saints amongst scientists, as among other men, but truth itself is a goal comparable with sanctity.

The darkness, of which the historians complain, is essentially the darkness of their own ignorance.

science is the most revolutionary force in the world.

Greek culture is pleasant to contemplate because of its great simplicity and naturalness, and because of the absence of gadgets, each of which is sooner or later a cause of servitude.

Equality and freedom are not luxuries to lightly cast aside. Without them, order cannot long endure before approaching depths beyond imagining.

My scientific work is motivated by an irresistible longing to understand the secrets of nature not by other feelings.

Religion is based, I think, primarily and mainly upon fear.

When old people speak it is not because of the sweetness of words in our mouths; it is because we see something which you do not see.

We're the only creature God ever created that doesn't want to adapt. We want to make it stand still. And one thing that's constant is nature is constantly changing.

All problems are finally scientific problems.

It means protecting people, showing loving concern for each and every person, especially children, the elderly, those in need, who are often the last we think about.

Just write and love what you're writing. And if you're not loving what you're writing, take a look at why and fix that.

When leaders care less about their people, their people will be careless.