Don’t throw away the old bucket until you know whether the new one holds water.
Dress the monkey in silk and it is still a monkey.
He who has done evil, expects evil.
He who knows nothing, doubts nothing.
If you want to gather a lot of knowledge, act as if you are ignorant.
It’s not enough to know how to ride – you must also know how to fall.
It’s not shameful not to know, but it’s shameful not to ask.