Science is organized knowledge.

... those who have never entered upon scientific pursuits know not a tithe of the poetry by which they are surrounded... Sad, indeed, is it to see how men occupy themselves with trivialities, and are indifferent to the grandest phenomena - care not to understand the architecture of the heavens, but are deeply interested in some contemptible controversy about the intrigues of Mary Queen of Scots!

The idea of disembodied spirits is wholly unsupported by evidence, and I cannot accept it.

Pervading all nature we may see at work a stern discipline , which is a little cruel that it may be very kind.

Absolute morality is the regulation of conduct in such a way that pain shall not be inflicted.

Religion has been compelled by science to give up one after another of its dogmas. . . .

Agnostics are people who, like myself, confess themselves to be hopelessly ignorant concerning a variety of matters, about which metaphysicians and theologians, both orthodox and heterodox, dogmatize with the utmost confidence.