Cynicism is humor in ill health.

Human history becomes more and more a race between education and catastrophe.

A time will come when a politician who has willfully made war and promoted international dissension will be as sure of the dock and much surer of the noose than a private homicide. It is not reasonable that those who gamble with men's lives should not stake their own.

Man is the unnatural animal, the rebel child of nature, and more and more does he turn himself against the harsh and fitful hand that reared him.

Leaders should lead as far as they can and then vanish. Their ashes should not choke the fire they have lit.

It is not reasonable that those who gamble with men's lives should not pay with their own.

In politics, strangely enough, the best way to play your cards is to lay them face upwards on the table.

Biologically the species is the accumulation of the experiments of all its successful individuals since the beginning.

If you fell down yesterday, stand up today.

I want to go ahead of Father Time with a scythe of my own.

I must confess that my imagination refuses to see any sort of submarine doing anything but suffocating its crew and floundering at sea.

No passion in the world is equal to the passion to alter someone else's draft.

Human history in essence is the history of ideas.

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

History is a race between education and catastrophe.