History is the science of what never happens twice.

Science is feasible when the variables are few and can be enumerated; when their combinations are distinct and clear. We are tending toward the condition of science and aspiring to do it. The artist works out his own formulas; the interest of science lies in the art of making science.

Two dangers constantly threaten the world: order and disorder.

Man cannot bear his own portrait. The image of his limits and his own determinacy exasperates him, drives him mad.

History is the most dangerous product evolved from the chemistry of the intellect. ...History will justify anything. It teaches precisely nothing, for it contains everything and furnishes examples of everything.

In poetry everything which must be said is almost impossible to say well.

Sometimes I think and other times I am.