“If you know how to spend less than you get, you have the philosopher's stone.”

“Work while it is called today for you know not how much you may be hindered tomorrow.”

“He that has once done you a kindness will be more ready to do you another, than he whom you yourself have obliged.”

“No one cares what you know until they know that you care!”

“You desire to know something of my Religion. It is the first time I have been questioned upon it: But I do not take your Curiosity amiss, and shall endeavour in a few Words to gratify it... I have, with most of the present Dissenters in England, some Doubts as to his [Jesus'] divinity; tho' it is a question I do not dogmatize upon, having never studied it, and I think it needless to busy myself with it now, when I expect soon an Opportunity of knowing the Truth with less Trouble.[Letter to Ezra Stiles, March 9, 1790]”

“I advise you to apply to all those whom you know will give something; next, to those whom you are uncertain whether they will give any thing or not, and show them the list of those who have given; and, lastly, do not neglect those who you are sure will give nothing, for in some of them you may be mistaken.”

“A slip of the foot you may soon recover, but a slip of the tongue you may never get over.”