As you cannot do what you want, Want what you can do

The greatest geniuses sometimes accomplish more when they work less.

We know more about the movement of celestial bodies than about the soil underfoot.

Experience does not err. Only your judgments err by expecting from her what is not in her power.

Study me, reader, if you delight in me, because on very few occasions shall I return to the world, and because the patience for this profession is found in very few, and only in those who wish to compose things anew. Come, oh men, to see the miracles that such studies will disclose to nature.

Those who, in debate, appeal to their qualifications, argue from memory, not from understanding.

Medicine is the restoration of discordant elements; sickness is the discord of the elements infused into the living body.