No matter how difficult a task may look.. Persistence and steady action will get you through

... deprived of pain, and also deprived of danger, able to do what it wants, [Nature] does not need us, nor understands our deserts, and it cannot be angry.

Yet a little while, and (the happy hour) will be over, nor ever more shall we be able to recall it.

Things stand apart so far and differ, that What's food for one is poison for another.

True piety lies rather in the power to contemplate the universe with a quiet mind.

From the midst of the very fountain of pleasure, something of bitterness arises to vex us in the flower of enjoyment.

Falling drops will at last wear away stone.