As to science, we may well define it for our purpose as "methodical thinking directed toward finding regulative connections between our sensual experiences".

It is nothing short of a miracle that modern methods of teaching have not yet entirely strangled that sacred spirit of curiosity and inquiry, for this delicate plant needs freedom no less than stimulation.

The life of the individual has meaning only insofar as it aids in making the life of every living thing nobler and more beautiful. Life is sacred, that is to say, it is the supreme value, to which all other values are subordinate.

[Freud's] sense of reality is less clouded by wishful thinking than is the case with other people and [he combines] the qualities of critical judgment, earnestness and responsibility.

The creative scientist studies nature with the rapt gaze of the lover, and is guided as often by aesthetics as by rational considerations in guessing how nature works.

I think and think for months and years. Ninety-nine times, the conclusion is false. The hundredth time I am right.

James Clerk Maxwell's [work is the] most profound and the most fruitful.