The highest goal that man can achieve is amazement.

In all times it is only individuals that have advanced science, not the age.

If we meet someone who owes us a debt of gratitude, we remember the fact at once. How often we can meet someone to whom we owe a debt of gratitude without thinking about it at all!

Ohne Hast, aber ohne Rast. - Without haste, but without rest.

The important thing is not to know more than all men, but to know more at each moment than any particular man.

Tolerance comes of age. I see no fault committed that I myself could not have committed at some time or other.

For the nature of women is closely allied to art