Only when man is fully human does he play: only when he plays naturally is he fully human.

I think that for everything, only love is the best teacher, which far exceeds the sense of responsibility.

The development of the world of thinking, in a sense, is the continuous getting rid of surprise.

A profound and broad mind always extends the field of interest to countless things.

Only by being interested in external things can people maintain their mental health.

Only by being interested in external things can people maintain their mental health.

I believe that in all situations, only love is the best teacher.

Knowledge must be in line with your own interests before you can benefit.

Genius is strong interest and tenacious fascination.

Knowledge must be in line with one's own interests in order to benefit.

If a person's ambition is not far-reaching and his mind is absent, he will not succeed in learning.

The hobby of literature and art is an instinct that cannot be destroyed.