Too much wisdom is folly.
More German Proverbs:
To live long, eat like a cat, drink like a dog.German
If you want to be old, hang yourself when you are young.
German
The biggest fools are those who are paid to be wise.
German
Time is the best preacher.
German
Both noble and common blood are the same color.
German
Who makes friends of all, keeps none.
German