Spirit and personal development

Learning to develop his or her abilities, making better use of them and knowing how to exceed the bounded material horizon.

Optical illusions
The perceived reality often depends on an angle of vision. The images that the brain creates are the results of automatisms and a-priori.

Escher's stairs
The representations of impossible buildings made the notoriety of Mr. C. Escher. But are these objects all impossible to reproduce concretely?

The methods of the writers
How to write better and faster, to know how to write an interesting script and thus develop his capacity as a writer.

What is mentalism?
Definition and history of this science of personal development which has experienced a renewed notoriety thanks to the television series "The Mentalist".

A thinking on intelligence
Isaac Asimov himself tells a story to think about the issue.