The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore, all progress depends upon the unreasonable man.
If you are distressed by anything external, the pain isnot due to the thing itself but to your own estimate of it; and this you havethe power to revoke at any moment.
If youare planning on doing business with someone again, don't be too tough in thenegotiations. If you're going to skin a cat, don't keep it as a house cat.
