We must not say that every mistake is a foolish one.
Confidence is that feeling by which the mind embarks in great and honorable courses with a sure hope and trust in itself.
Mathematics is an obscure field, an abstruse science, complicated and exact; yet so many have attained perfection in it that we might conclude almost anyone who seriously applied himself would achieve a measure of success.
The man who is always fortunate cannot easily have a great reverence for virtue.