Theoretical approaches have their place and are, I…

The rabid opposition to group selection has now considerably subsided. In the process, the conceptual structure of evolutionary theory has become clearer, as have…

— Elliott Sober

A theory must be tempered with reality.

— Jawaharlal Nehru

Essential to the theory of evolution is the premise that everything has come into being by itself.

— Walter Lang

I see anarchism as the theoretical ideal to which we are all gradually evolving to a point where everybody can tell the truth to…

— Robert Anton Wilson

We were convinced that the people need and require this faith. We have therefore undertaken the fight against the atheistic movement, and that not…

— Adolf Hitler

One of the goals of philosophy is wage theoretical battle. That is why we can say that every thesis is always, by its very…

— Louis Althusser

When you design a building, you start from a general philosophy, and you come down, and you start from detail and come up. Only…

— Renzo Piano

Humanism has many meanings, but what attracts me about it is that it encourages men and women to take a broad view of situations…

— Joseph Badaracco

So instead of talking about theoretical ways of ending the war and violence, I say that we have to get rid of the individual…

— Colin Quinn

The classes of problems which are respectively known and not known to have good algorithms are of great theoretical interest. [...] I conjecture that…

— Jack Edmonds

A theoretical system does not merely state facts which have been observed and that logically deducible relations to other facts which have also been…

— Talcott Parsons

The trouble is that when you read criticisms about the other films that I've made you get the impression that they're all about themes,…

— Michael Haneke

The fear of speculation, the ostensible rush from the theoretical to the practical, brings about the same shallowness in action that it does in…

— Friedrich Wilhelm Joseph Schelling

The pace of science forces the pace of technique. Theoretical physics forces atomic energy on us; the successful production of the fission bomb forces…

— Erich Fromm

Close contact between science and the practice of collective farms and State farms creates inexhaustible opportunities for the development of theoretical knowledge, enabling us…

— Trofim Lysenko