Things which matter most must never be at the mercy of things which matter least.

The really unhappy person is the one who leaves undone what they can do, and starts doing what they don't understand; no wonder they come to grief.

Try novelties for salesman's bait, For novelty wins everyone.

Plunge boldly into the thick of life!

Napoleon affords us an example of the danger of elevating one's self to the absolute, and sacrificing everything to the carrying out of an idea.

All professional men are handicapped by not being allowed to ignore things which are useless.

If I work incessantly to the last, nature owes me another form of existence when the present one collapses.