Women see through Claude Lorraines.

All science has one aim, namely, to find a theory of nature.

All the tools and engines on earth are only extensions of man's limbs and senses.

Experience is the only teacher, and we get his lesson indifferently in any school.

Our life is an apprenticeship to the truth that around every circle another can be drawn; that there is no end in nature, but every end is a beginning, and under every deep a lower deep opens.

Our globe discovers its bidden virtues, not only in heroes and arch-angels, but in gossips and nurses.

We are symbols, and inhabit symbols.