In order for three people to keep a secret, two must be dead.

Watch the pennies and the dollars will take care of themselves.

I have always thought that one man of tolerable abilities may work great changes, and accomplish great affairs among mankind, if he first forms a good plan, and, cutting off all amusements or other employments that would divert his attention, make the execution of that same plan his sole study and business.

It is the working man who is the happy man. It is the idle man who is the miserable man.

He that pays for work before it's done, has but a pennyworth for two pence.

Do you love truth for truth's sake, and will you endeavor impartially to find and receive it yourself, and communicate it to others?

I have conceived a higher opinion of the natural capacities of the black race than I had ever before entertained. Their apprehension seems as quick, their memory as strong, and their docility in every respect equal to that of white children.