"The sadness will last forever."

"Believe me that sometimes I laugh heartily because people suspect me of all kinds of malignity and absurdity, of which not a hair of my head is guilty — I, who am really no one but a friend of nature,…"

"The great thing is to develop oneself."

"I put my heart and my soul into my work, and have lost my mind in the process."

"It is good to love many things, for therein lies the true strength, and whosoever loves much performs much, and can accomplish much, and what is done in love is done well."