Nothing leads so straight to futility as literary ambitions without systematic knowledge.

Hunger makes a fool of a man.

Few people who know of the work of Langley, Lilienthal, Pilcher, Maxim and Chanute but will be inclined to believe that long before the year 2000 A.D., and very probably before 1950, a successful aeroplane will have soared and come home safe and sound.

He who does not contemplate the future is destined to be overwhelmed by it.

The weaving of mankind into one community does not imply the creation of a homogeneous community, but rather the reverse; the welcome and adequate utilization of distinctive quality in an atmosphere of understanding.... Communities all to one pattern, like boxes of toy soldiers, are things of the past, rather than of the future.

An immense and ever-increasing wealth of knowledge is scattered about the world today; knowledge that would probably suffice to solve all the mighty difficulties of our age, but it is dispersed and unorganized. We need a sort of mental clearing house for the mind: a depot where knowledge and ideas are received, sorted, summarized, digested, clarified and compared.

This has ever been the fate of energy in security; it takes to art and to eroticism, and then comes languor and decay.