I believe there exists, & I feel within me, an instinct for the truth, or knowledge or discovery, of something of the same nature as the instinct of virtue, & that our having such an instinct is reason enough for scientific researches without any practical results ever ensuing from them.

But science can only be created by those who are thoroughly imbued with the aspiration toward truth and understanding

The process of scientific discovery is, in effect, a continual flight from wonder.

Science is the century-old endeavour to bring together... perceptible phenomena... through systematic thought.

The most beautiful experience we can have is the mysterious. It is the source of all true art and science.

Every serious scientific worker is painfully conscious ... of being relegated to an ever-narrowing sphere of knowledge.