Nothing has such power to broaden the mind as the ability to investigate systematically and truly all that comes under thy observation in life.

Because your own strength is unequal to the task, do not assume that it is beyond the powers of man; but if anything is within the powers and province of man, believe that it is within your own compass also.

Forward, as occasion offers. Never look round to see whether any shall note it... Be satisfied with success in even the smallest matter, and think that even such a result is no trifle.

Observe constantly that all things take place by change, and accustom thyself to consider that the nature of the Universe loves nothing so much as to change the things which are, and to make new things like them.

Never let the future disturb you. You will meet it, if you have to, with the same weapons of reason which today arm you against the present.

Accept the things to which fate binds you, and love the people with whom fate brings you together, but do so with all your heart.

The happiness of your life depends upon the quality of your thoughts: therefore, guard accordingly, and take care that you entertain no notions unsuitable to virtue and reasonable nature.