At bottom there is but one subject of study: the forms and metamorphoses of mind. All other subjects may be reduced to that; all other studies bring us back to this study.

Mother of Marvels, mysterious and tender Nature, why do we not live more in thee.

There is no respect for others without humility in one's self.

The best path through life is the highway.

To know how to suggest is the great art of teaching. To attain it we must be able to guess what will interest; we must learn to read the childish soul as we might a piece of music. Then, by simply changing the key, we keep up the attraction and vary the song.

Tell me what you feel in your room when the full moon is shining in upon you and your lamp is dying out, and I will tell you how old you are, and I shall know if you are happy.

Uncertainty is the refuge of hope.