Curiosity in children ... is but an appetite after knowledge and therefore ought to be encouraged in them, not only as a good sign, but as the great instrument nature has provided to remove that ignorance they were born with and which, without this busy inquisitiveness, will make them dull and useless creatures.
John LockeIf the innocent honest Man must quietly quit all he has for Peace sake, to him who will lay violent hands upon it, I desire it may be considered what kind of Peace there will be in the World, which consists only in Violence and Rapine; and which is to be maintained only for the benefit of Robbers and Oppressors.
John LockeSet the mind to work, and apply the thoughts vigorously to the business, for it holds in the struggles of the mind, as in those of war, that to think we shall conquer is to conquer.
John Locke