Personal beauty is a greater recommendation than any letter of introduction

There are things which seem incredible to most men who have not studied mathematics.

To the sober person adventurous conduct often seems insanity.

To Thales the primary question was not what do we know, but how do we know it.

To the attentive eye, each moment of the year has its own beauty, and in the same field, it beholds, every hour, a picture which was never seen before, and which shall never be seen again

Strange that the vanity which accompanies beauty - excusable, perhaps, when there is such great beauty, or at any rate understandable -should persist after the beauty was gone.