From now on, depressions will be scientifically created.

Air power is new to all our countries. It brings advantages to some and weakens others; it calls for readjustment everywhere.

Life without risks is not worth living.

Life's values originate in circumstances over which the individual has no control.

When I watch species other than my own, their instinct's wisdom is what most impresses and disturbs me.

Consciousness grows independent of the ordinary senses.

As civilization advances, man grows unconscious of the primitive elements of life; he is separated from them by his perfection of material techniques.