Sans is a French word meaning "without," so the given quotation means, "Without teeth, without eyes, without taste, without everything." This is the final line of Jaques' soliloquy from act two, scene seven of As You Like It.
In the soliloquy, Jaques says that the lives of men pass through different stages, much as a play passes from one act to the next. In fact Jaques identifies seven stages in the life of man. The first stage he says is infancy, and the last stage is a return to infancy, bringing man's life full circle. Jaques calls the seventh stage the "second childishness." He says that just as a new born baby begins life toothless, blind, and with no understanding of the world, so too the elderly man ends life toothless, blind, and with no understanding of the world.
This idea of man's life being cyclical is a common idea in Shakespeare's plays. In Hamlet, for example, the eponymous Hero tells Claudius that, "A man may fish with the worm that hath eat of a king, and eat of the fish that hath fed of that worm." In other words, when a king is buried, he will become food for the worms, and a common man may then use one of those same worms to catch his supper.
In As You Like It, Jaques' soliloquy is well timed to create comedy. After he finishes his speech, explaining that old men are very much like new born babies, Orlando enters the stage carrying his elderly servant, Adam. Jaques' soliloquy also links to the theme of change, which is one of the key themes throughout the play. In the play, those characters who enter the Ardenne Forest seem to change dramatically before they leave. Jaques' soliloquy, with its proposed seven stages of mankind, points to this truth that men change radically from one act or stage of their lives to the next.