When you are in it up to your ears, keep your mouth shut.
To drink is a small matter. To be thirsty is everything.
No doubt about it: error is the rule, truth is the accident of error.
Do not trust your memory; it is a net full of holes; the most beautiful prizes slip through it.
You conquered the landscape with the soles of shoes, not the tires.
The swimmer adrift on the open seas measures his strength, and strives with all his muscles to keep himself afloat. But what is he to do when there is no land on the horizon, and none beyond it?