We have reason to believe that when, during the crusades, Europe at last began to establish hospitals, they were inspired by the Arabs of near East....The first hospital in Paris, Les Quinze-vingt, was founded by Louis IX after his return from the crusade 1254-1260.

The most malicious kind of hatred is that which is built upon a theological foundation.

The main duty of the historian of mathematics, as well as his fondest privilege, is to explain the humanity of mathematics, to illustrate its greatness, beauty and dignity, and to describe how the incessant efforts and accumulated genius of many generations have built up that magnificent monument, the object of our most legitimate pride as men, and of our wonder, humility and thankfulness, as individuals. The study of the history of mathematics will not make better mathematicians but gentler ones, it will enrich their minds, mellow their hearts, and bring out their finer qualities.

It would be foolish to give credit to Euclid for pangeometrical conceptions; the idea of geometry deifferent from the common-sense one never occurred to his mind. Yet, when he stated the fifth postulate, he stood at the parting of the ways. His subconscious prescience is astounding. There is nothing comperable to it in the whole history of science.

There are but few saints amongst scientists, as among other men, but truth itself is a goal comparable with sanctity.

Perhaps the main, as well as the least obvious, achievement of the Middle Ages, was the creation of the experimental spirit, or more exactly its slow incubation. This was primarily due to Muslims down to the end of the twelfth century, then to Christians.

We have reason to believe that when, during the crusades, Europe at last began to establish hospitals, they were inspired by the Arabs of near East....The first hospital in Paris, Les Quinze-vingt, was founded by Louis IX after his return from the crusade 1254-1260.