The way of knowledge is narrow.
More Traditional Proverbs:
It's easy to get lost in thought if it's not familiar territory to you.Traditional
Sick as a dog.
Traditional
Of all the strategems, to know when to quit is the best.
Traditional
The old gray mare just ain't what she used to be.
Traditional
Whatever you teach, be brief; what is quickly said the mind readily receives and faithfully retains, while everything superfluous runs over as from a full container. Who knows much says least.
Traditional
After death the doctor.
Traditional