I was born to love - but none of you wanted to believe it, and that misunderstanding was crucial in forming my character. It's true that nature was strangely inconsistent in giving me a warm heart, but also a face that was like a stone mask and a tongue that was heavy and slow. She refused me what she bestowed freely on even the most loutish of my fellow men. . . . People judged my inner character by my outer covering, and like a sterile fruit, I withered under the rough husk I couldn't slough off.

There is only one happiness in this life, to love and be loved.

The whole secret of the study of nature lies in learning how to use one's eyes.

The intellect seeks, the heart finds.

Vanity is the quicksand of reason.

Simplicity is the most difficult thing to secure in this world; it is the last limit of experience and the last effort of genius.

It is quite wrong to think of old age as a downward slope. On the contrary, one climbs higher and higher with the ad-vancing years, and that, too with sur-prising strides. Brain-work comes as easily to the old as physical exertion to the child. One is moving, it is true, towards the end of life, but that end is now a goal, and not a reef in which the vessel may be dashed.