Where does Albert Einstein find Refuge, Calm and Serenity?

Where does Albert Einstein find Refuge, Calm and Serenity?

https://bidspirit-images.global.ssl.fastly.net/winners-auctions/cloned-images/21220/3/a_ignore_q_80_h_100_c_limit_3.jpghttps://bidspirit-images.global.ssl.fastly.net/winners-auctions/cloned-images/21220/3/a_ignore_q_80_h_100_c_limit_3.jpg"... A cruise in the sea, is an excellent opportunity for maximum calm and reflection on ideas from a different perspective ..."
Letter from Einstein and his wife Elsa, while they were on the "Oakland" cruise ship on the "Hamburg-America" line, near the shores of Panama. 31.12.1932.

[3] pages. 14x19 cm. "Hamburg-Amerika Linie" stationery. Signed autograph. German. English transcript of the letter included.

Content: Einstein wrote a few lines on one page in which he offers his deep-felt thanks for the generous shipment of fruit that arrived from the couple's friend, Ms. Stampe. The scientist notes that the benefit of an ocean journey is that it gives one the opportunity for complete relaxation and the ability to think about different ideas from new perspectives.
On the second side of the paper, his wife Elsa wrote a lengthy thank-you for the shipment of fruit and discusses the tremendous benefit that her husband got from the trip. "There is no other place where my husband is so relaxed, sweet, serene and detached from routine distractions, the ship carries him far away ..." Elsa adds that they have a lot of time to read and to think, and at night they look at the skies and the glittering stars. She concludes with the thought that this world could be so nice, if people would just be a little bit more understanding and logical. 

Condition: Very fine. Fold marks.