He is celebrated also for practical wisdom. "Know thyself," is one of his remarkable sayings. The chief claim of Thales to a lofty rank among sages, however, is that he was the first who attempted a logical solution of material phenomena, without resorting to mythical representations. Thales felt that there was a grand question to be answered relative to the _beginning of things._ "Philosophy," it has been well said, "maybe a history of _errors_^ but not of _follies_". It was not a folly, in a rude age, to speculate on the first or fundamental principle of things. Thales looked around him upon Nature, upon the sea and earth and sky, and concluded that water or moisture was the vital principle. He felt it in the air, he saw it in the clouds above and in the ground beneath his feet. He saw that plants were sustained by rain and by the dew, that neither animal nor man could live without water, and that to fishes it was the native element. What more important or vital than water? It was the _prima materia_, the [Greek: archae] the beginning of all things,--the origin of the world. How so crude a speculation could have been maintained by so wise a man it is difficult to conjecture. It is not, however, the cause which he assigns for the beginning of things which is noteworthy, so much as the fact that his mind was directed to any solution of questions pertaining to the origin of the universe. It was these questions, and the solution of them, which marked the Ionian philosophers, and which showed the inquiring nature of their minds. What is the great first cause of all things? Thales saw it in one of the four elements of Nature as the ancients divided them; and this is the earliest recorded theory among the Greeks of the origin of the world. It is an induction from one of the phenomena of animated Nature,--the nutrition and production of a seed. He regarded the entire world in the light of a living being gradually maturing and forming itself from an imperfect seed-state, which was of a moist nature. This moisture endues the universe with vitality. The world, he thought, was full of gods, but they had their origin in water. He had no conception of God as _intelligence_, or as a _creative_ power. He had a great and inquiring mind, but it gave him no knowledge of a spiritual, controlling, and personal deity.