Ignorance is a blank sheet, on which we may write; but error is a scribbled one, on which we must first erase.

Ignorance is a blank sheet, on which we may write; but error is a scribbled one, on which we must first erase.

无知是一张白纸，我们可以在上面写字;但错误是一种潦草的错误，我们必须先把它擦掉。

-- Charles Caleb Colton 英国作家科尔顿