Reveal not every secret you have to a friend, for how can you tell but that friend may hereafter become an enemy. And bring not all mischief you are able to upon an enemy, for he may one day become your friend.
Those are my principles, and if you don't like them... well, I have others.
When we are unhurried and wise, we perceive that only great and worthy things have any permanent and absolute existence, that petty fears and petty pleasures are but the shadow of the reality.
There are sadistic scientists who hurry to hunt down errors instead of establishing the truth.
Late to bed and late to wake will keep you long on money and short on mistakes.
Know, first, who you are; and then adorn yourself accordingly.
We require from buildings two kinds of goodness: first, the doing their practical duty well: then that they be graceful and pleasing in doing it.