Konrad Lorenz

I believe that present day civilized man suffers from insufficient discharge of his aggressive drive.

I grew up in the large house and the larger garden of my parents in Altenberg. They were supremely tolerant of my inordinate love for animals.

Evil, by definition, is that which endangers the good, and the good is what we perceive as a value.

We do not take humor seriously enough.

It is a good morning exercise for a research scientist to discard a pet hypothesis every day before breakfast. It keeps him young.

From a neighbour, I got a one-day-old duckling and found, to my intense joy, that it transferred its following response to my person. At the same time, my interest became irreversibly fixated on water fowl, and I became an expert on their behaviour even as a child.

I owe undying gratitude to my patient parents.

The bond with a true dog is as lasting as the ties of this earth will ever be.

I consider early childhood events as most essential to a man's scientific and philosophical development.

The father-mother family with two children isolated in a city flat is already insufficient.

We had better dispense with the personification of evil, because it leads, all too easily, to the most dangerous kind of war: religious war.

Every man gets a narrower and narrower field of knowledge in which he must be an expert in order to compete with other people. The specialist knows more and more about less and less and finally knows everything about nothing.