He Who Hid Well, Lived Well.

It Is Not Enough To Have A Good Mind. The Main Thing Is To Use It Well.

I Am Indeed Amazed When I Consider How Weak My Mind Is And How Prone To Error.

Thus Each Truth Discovered Was A Rule Available In The Discovery Of Subsequent Ones.

The Object Of Music Is A Sound. The End; To Delight, And Move Various Affections In Us.

All Is To Be Doubted.