Voyages to Phœnicia are recorded of him, which, however, rest on vague tradition; but that he was in Egypt in his old age seems undoubted.[19] There he was said to have learned geometry, but this would appear not to have been much, judging from the anecdote, which Diogenes (I. 24, 27) retails from a certain Hieronymus. It was to the effect that Thales taught the Egyptians to measure the height of their pyramids by shadow—by taking the relation borne by the height of a man to his shadow. The terms of the proportion are: as the shadow of a man is to the height of a man, so is the shadow of a pyramid to its height. If this were something new to the Egyptians, they must have been very far back in the theory of geometry. Herodotus tells (I. 74), moreover, that Thales foretold an eclipse of the sun that happened exactly on the day of the battle between the Medians and Lydians, and that he ascribed the rising of the Nile to the contrary Etesian winds, which drove back the waters.[20] We have some further isolated instances of, and anecdotes about his astronomical knowledge and works.[21] “In gazing at and making observations on the stars, he fell into a ditch, and the people mocked him as one who had knowledge of heavenly objects and yet could not see what lay at his own feet.” The people laugh at such things, and boast that philosophers cannot tell them about such matters; but they do not understand that philosophers laugh at them, for they do not fall into a ditch just because they lie in one for all time, and because they cannot see what exists above them. He also showed, according to Diogenes (I. 26), that a wise man, if he wishes, can easily acquire riches. It is more important that he fixed that the year, as solar year, should have 365 days. The anecdote of the golden tripod to be given to the wisest man, is recorded by Diogenes (I. 27-33); and it carries with it considerable weight, because he combines all the different versions of the story. The tripod was given to Thales or to Bias; Thales gave it to some one else, and thus it went through a circle until it again came to Thales; the latter, or else Solon, decided that Apollo was wisest, and sent it to Didyma or to Delphi. Thales died, according to Diogenes (I. 38), aged seventy-eight or ninety, in the 58th Olympiad; according to Tennemann (vol. i. p. 414), it was in Olympiad 59, 2 (543 B.C.), when Pythagoras came to Crotona. Diogenes relates that he died at one of the games, overcome by heat and thirst. We have no writings by Thales, and we do not know whether he was in the habit of writing. Diogenes Laertius (I. 23, 34, 35) speaks of two hundred verses on astronomy, and some maxims, such as “It is not the many words that have most meaning.”