A man is as unhappy as he has convinced himself he is.
Everything hangs on one's thinking.
There is nothing the wise man does reluctantly.
Cling tooth and nail to the following rule: Not to give in to adversity, never to trust prosperity, and always to take full note of fortune's habit of behaving just as she pleases, treating her as if she were actually going to do everything it is in her power to do. Whatever you have been expecting for some time comes as less of a shock.
Principles are like seeds; they are little things which do much good, if the mind that receives them has the right attitudes.
The place one's in, though, doesn't make any contribution to peace of mind: it's the spirit that makes everything agreeable to oneself.
It is part of the cure to wish to be cured.
