Children generally hate to be idle; all the care then is that their busy humour should be constantly employed in something of use to them
John LockeParents wonder why the streams are bitter, when they themselves have poisoned the fountain.
John LockeIf we trace the progress of our minds, and with attention observe how it repeats, adds together, and unites its simple ideas received from sensation or reflection, it will lead us farther than at first, perhaps, we should have imagined.
John LockeCertainly great persons had need to borrow other men's opinions to think themselves happy; for if they judge by their own feeling, they cannot find it: but if they think with themselves what other men think of them, and that other men would fain be as they are, then they are happy as it were by report, when, perhaps, they find the contrary within.
John Locke