One of the effects of civilization is to diminish the rigour of the application of the law of natural selection. It preserves weakly lives that would have perished in barbarous lands.

What nature does blindly, slowly and ruthlessly, man may do providently, quickly, and kindly. As it lies within his power, so it becomes his duty to work in that direction.

Eugenics is the study of the agencies under social control that may improve or impair the racial qualities of future generations either physically or mentally.

The cat is the only non-gregarious domestic animal. It is retained by its extra-ordinary adhesion to the comforts of the house in which it is reared.

The aim of eugenics is to represent each class or sect by its best specimens; that done, to leave them to work out their common civilization in their own way.

[Statistics are] the only tools by which an opening can be cut through the formidable thicket of difficulties that bars the path of those who pursue the Science of Man.

Whenever you can, count.

All male animals, including men, when they are in love, are apt to behave in ways that seem ludicrous to bystanders.

The object . . . is to discover methods of condensing information concerning large groups of allied facts into brief and compendious expressions suitable for discussion.

Characteristics cling to families.

I do not so easily think in words.... after being hard at work having arrived at results that are perfectly clear... I have to translate my thoughts in a language that does not run evenly with them.

Only a self-taught man can teach others

A person who faces unique miseries learns much. All time transports him rich insights.

All nature wears one universal grin.

A collection of errors does not make a truth: quality cannot stem from quantity – a value is not a weight. The reasons of the majority cannot be taken as good reasons.

I've gone through my periods. I've read the Bible completely, all the way through twice. I did it once when I was about 20 and I did it again when I was about 30.

Mechanizing man's work had changed but not lighted his toil.

We have a bow and arrow and if we aim well, we can hit the target. The problem is that Bayern has a bazooka. The probability that they will hit the target is clearly higher.

Citizens of the democratic societies should undertake a course of intellectual self defense to protect themselves from manipulation and control, and to lay the basis for meaningful democracy.

I think the biggest mistake most people make when they pick their first job is they don't worry enough about whether they'll love the work, and they worry more about whether it's good experience

Most people would not want to live where there are no churches but many people live as though there were no churches.