Homo Sapiens, The Only Creature Endowed With

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.

When It Is Said That An Object Occupies A Large Space In The Soul Or Even That It Fills It Entirely, We Ought To Understand By This Simply That Its Image Has Altered The Shade Of A Thousand Perceptions Or Memories, And That In This Sense It Pervades Them, Although It Does Not Itself Come Into View.

Europe Is Overpopulated, The World Will Soon Be In The Same Condition, And If The Self-reproduction Of Man Is Not Rationalized... We Shall Have War.

We Regard Intelligence As Man's Main Characteristic And We Know That There Is No Superiority Which Intelligence Cannot Confer On Us, No Inferiority For Which It Cannot Compensate.

There Are Manifold Tones Of Mental Life, Or, In Other Words, Our Psychic Life May Be Lived At Different Heights, Now Nearer To Action, Now Further Removed From It, According To The Degree Of Our Attention To Life.