Summarise the text: " Sanctuary of Stone " in 150-200 words please do it fast! You have 35 minutes!​

once a philosopher was traveling down a river in a small boat. while he  was crossing the river he asked the boatman: ”  have you ever  heard about philosophy? ” “no”,  i haven*t " said the boatman. “i * ve never  heard about it. what  is  it  ? ” “i  am sorry for you, indeed,” replied the learned man, “you  have lost a quarter of your life as it’s a very interesting science! ” several minutes later the philosopher asked the boatman another question: “did   you  hear about astronomy, when you  were at school? ” “no, i  left school many years ago and i  forgot all about it.,” was the answer. to this the philosopher answered that he  was  really sorry for the man, and he  thought that the boatman lost a second quarter of his life.

                      some minutes passed and the passenger again  wondered if the man had ever  heard about algebra. and the man  had to admit that he had never  known anything about it. “in that case you certainly  lost a third quarter of your life! ” said the scientist.

                      at that very moment the boat struck on a big stone. the boatman jumped and cried: “ have you ever  learnt  swimming ( to swim)? ” “no,” was the answer. the boatman explained sadly to the philosopher that he  was sure the scientist  had lost his whole life as the boat  was sinking