The discovery of truth is prevented more effectively, not by the false appearance things present and which mislead into error, not directly by weakness of the reasoning powers, but by preconceived opinion, by prejudice.
All power is of one kind, a sharing of the nature of the world. The mind that is parallel with the laws of nature will be in the current of events, and strong with their strength.
There is no power on earth which can be kept long confined within a narrow limit. It cannot be kept compressed too long to allow of expansion at a subsequent period.