It may be observed in general that the future is purchased by the present. It is not possible to secure distant or permanent happiness but by the forbearance of some immediate gratification.

Courage is the greatest of all virtues, because if you haven't courage, you may not have an opportunity to use any of the others.

The dangers gather as the treasures rise.

Mankind have a great aversion to intellectual labor; but even supposing knowledge to be easily attainable, more people would be content to be ignorant than would take even a little trouble to acquire it.

None of the projects or designs which exercise the mind of man are equally subject to obstructions and disappointments with the pursuit of fame.

That observation which is called knowledge of the world will be found much more frequently to make men cunning than good.

He that travels in theory has no inconveniences.