The major task of the twentieth century will be to explore the unconscious, to investigate the subsoil of the mind.

To ease another's burden, help to carry it.

In short, intelligence, considered in what seems to be its original feature, is the faculty of manufacturing artificial objects, especially tools to make tools, and of indefinitely varying the manufacture.

To drive out the darkness, bring in the light.

The present contains nothing more than the past, and what is found in the effect was already in the cause.

If reality impacted directly on our senses and our consciousness, if we could have direct communication between the material world and ourselves, art would be unnecessary.

Homo sapiens, the only creature endowed with reason, is also the only creature to pin its existence on things unreasonable.