Because a fact seems strange to you, you conclude that it is not one. ... All science, however, commences by being strange. Science is successive. It goes from one wonder to another. It mounts by a ladder. The science of to-day would seem extravagant to the science of a former time. Ptolemy would believe Newton mad.

I like the laughter that opens the lips and the heart, shows at the same time the pearls and the soul.

If you wish to understand what Revolution is, call it Progress; and if you wish to understand what Progress is, call it Tomorrow.

Be happy without picking flaws.

Homer is one of the men of genius who solve that fine problem of art - the finest of all, perhaps - truly to depict humanity by the enlargement of man: that is, to generate the real in the ideal.

The world is the expanding Greece and Greece is the shrinking world.

Animals are nothing but the portrayal of our virtues and vices made manifest to our eyes, the visible reflections of our souls.